Finding the Fourth Proportional to 121,535,278.62, 167,718,671.82 and 65,780,689.14
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Solution
The fourth proportional to 121,535,278.62, 167,718,671.82 and 65,780,689.14 is: 90,777,344.15
Step by Step Solution
- Step 1: Write the proportion equation
121,535,278.62 : 167,718,671.82 = 65,780,689.14 : x - Step 2: Convert to fraction form
121,535,278.62/167,718,671.82 = 65,780,689.14/x - Step 3: Cross multiply
121,535,278.62x = 167,718,671.82 × 65,780,689.14 - Step 4: Simplify right side
121,535,278.62x = 11,032,649,813,965,098 - Step 5: Solve for x
x = 11,032,649,813,965,098/121,535,278.62 - Step 6: Final answer
x = 90,777,344.15
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.