Bangladesh which scored 360 runs in the first innings, opened the 2nd innings on the last day (Friday) scored 102 for 4 in 43 overs after dismissing Sri Lanka for 224 runs in 103.4 when the bails were draw for the final day.
Earlier on Friday, Sri Lanka resumed the first innings with overnight total scored 190 for 6 and were bundled out for 224 runs in 103.4 overs, adding only 34 runs in the innings on the day.
Overnight batsman Ashen Bandara, who was in batting with 57 runs, contributed the team highest 85 runs off 266 balls in 373 minutes, featuring eighty boundaries while KN Peiris scored 28-ball 15 runs hitting three fours.
Bangladesh spinner Nayeem Hasan, who grabbed four wickets on Thursday, finally captured seven wickets for 93 runs in his 40 overs spell including 14 maidens, Shafiqul Islam took two wickets for 59 runs.
Earlier in the first innings Bangladesh team scored 360 for all in 135.4 overs featuring a brilliant century by skipper Nazmul Hossain Shanto (133 runs off 269) and a half century by Afif Hossain (54 runs off 108).
In the 2nd innings, opener Saif Hasan scored 113-ball 40 runs with the help of four fours and one six, Namul Hossain Shanto made 38-ball 25 runs hitting two four and two sixes while Zakir Hasan added not out 25 runs off 37-ball featuring five boundaries for Bangladesh.
Later, captain Nazmul Hossain Shanto was adjudged the player of the match for his brilliant century in the first innings and 25 runs in the 2nd innings.
KN Peiris claimed two Bangladesh wickets conceding 43 runs.
Touring Sri Lanka Emerging Cricket team clinched the three-match unofficial ODI series 2-1 beating hosts Bangladesh Emerging team by seven wickets under D/L method in the 3rd and last match at the same venue last Saturday.
Islanders Sri Lanka made a flying start beating Bangladesh by a big margin of 186 runs in the first one-day match at BKSP in Savar, but the host team made a good comeback in the 2nd match beating Sri Lanka by two wickets at the same venue on August 21.
The 2nd and final four-day match is scheduled to be held at Sheikh Kamal International Stadium in Cox's Bazar on September 3-6.