On back of higher oil prices, State-owned Oil and Natural Gas Corp (ONGC) on Wednesday posted its net profit of Rs 5,915.12 crore, a jump of 37 per cent in three-months to March 31, 2018. The net profit in the fourth quarter of 2017-18, the highest profit in last 17 quarters, was higher than Rs 4,340.18 crore net in the same period of the previous fiscal, according to the company.