Finding the Fourth Proportional to 139,105,729.08, 208,659,313.44 and 81,557,643.96
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Solution
The fourth proportional to 139,105,729.08, 208,659,313.44 and 81,557,643.96 is: 122,336,887.97
Step by Step Solution
- Step 1: Write the proportion equation
139,105,729.08 : 208,659,313.44 = 81,557,643.96 : x - Step 2: Convert to fraction form
139,105,729.08/208,659,313.44 = 81,557,643.96/x - Step 3: Cross multiply
139,105,729.08x = 208,659,313.44 × 81,557,643.96 - Step 4: Simplify right side
139,105,729.08x = 17,017,761,994,477,562 - Step 5: Solve for x
x = 17,017,761,994,477,562/139,105,729.08 - Step 6: Final answer
x = 122,336,887.97
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.