Finding the Fourth Proportional to 121,244,496.92, 167,317,472.75 and 65,489,916.98
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Solution
The fourth proportional to 121,244,496.92, 167,317,472.75 and 65,489,916.98 is: 90,376,121.62
Step by Step Solution
- Step 1: Write the proportion equation
121,244,496.92 : 167,317,472.75 = 65,489,916.98 : x - Step 2: Convert to fraction form
121,244,496.92/167,317,472.75 = 65,489,916.98/x - Step 3: Cross multiply
121,244,496.92x = 167,317,472.75 × 65,489,916.98 - Step 4: Simplify right side
121,244,496.92x = 10,957,607,399,700,912 - Step 5: Solve for x
x = 10,957,607,399,700,912/121,244,496.92 - Step 6: Final answer
x = 90,376,121.62
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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.