Finding the Fourth Proportional to 122,354,145.12, 168,853,175.87 and 66,596,872.71
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Solution
The fourth proportional to 122,354,145.12, 168,853,175.87 and 66,596,872.71 is: 91,906,109.50
Step by Step Solution
- Step 1: Write the proportion equation
122,354,145.12 : 168,853,175.87 = 66,596,872.71 : x - Step 2: Convert to fraction form
122,354,145.12/168,853,175.87 = 66,596,872.71/x - Step 3: Cross multiply
122,354,145.12x = 168,853,175.87 × 66,596,872.71 - Step 4: Simplify right side
122,354,145.12x = 11,245,093,459,760,650 - Step 5: Solve for x
x = 11,245,093,459,760,650/122,354,145.12 - Step 6: Final answer
x = 91,906,109.50
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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.