VASTAR RESOURCES, INC. EXHIBIT 12 STATEMENT SETTING FORTH DETAIL OF COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (Unaudited) For the Three Months Ended March 31, ------------- (Millions of dollars) 1997 1996 except ratio amounts) ----- ----- Income from continuing operations before income taxes, minority interest and cumulative effect of change in accounting principle(1)..... $ 67.2 $ 55.6 Fixed Charges: Interest expense charged to income, and portion of rentals representative of interest(2)......... 13.0 13.4 Capitalized Interest....................... --- --- Total fixed charges...................... 13.0 13.4 ------ ------ Earnings (1) + (2)........................ $ 80.2 $ 69.0 ====== ====== Ratio of earnings to fixed charges........ 6.17 5.15 The Company has no issuances of preferred stock.