Finding the Fourth Proportional to 121,905,467.53, 168,228,691.90 and 66,149,469.97
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Solution
The fourth proportional to 121,905,467.53, 168,228,691.90 and 66,149,469.97 is: 91,285,805.54
Step by Step Solution
- Step 1: Write the proportion equation
121,905,467.53 : 168,228,691.90 = 66,149,469.97 : x - Step 2: Convert to fraction form
121,905,467.53/168,228,691.90 = 66,149,469.97/x - Step 3: Cross multiply
121,905,467.53x = 168,228,691.90 × 66,149,469.97 - Step 4: Simplify right side
121,905,467.53x = 11,128,238,802,931,432 - Step 5: Solve for x
x = 11,128,238,802,931,432/121,905,467.53 - Step 6: Final answer
x = 91,285,805.54
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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.