Exhibit 12.2

Marathon Oil Corporation

Computation of Ratio of Earnings to Fixed Charges

TOTAL ENTERPRISE BASIS — Unaudited

(Dollars in Millions)

	Year Ended December 31
	2003		2002		2001		2000		1999
Portion of rentals representing interest	$	63	$	66	$	54	$	50	$	47
Capitalized interest, including discontinued operations		41		16		27		19		26
Other interest and fixed charges, including discontinued operations		270		316		349		375		365
Total fixed charges (A)	$	374	$	398	$	430	$	444	$	438
Earnings-pretax income with applicable adjustments (B)	$	2,422	$	1,446	$	3,365	$	1,884	$	1,830
Ratio of (B) to (A)		6.48		3.63		7.83		4.24		4.18