Finding the Fourth Proportional to 100,072,623.98, 138,029,028.54 and 91,839,273.68
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Solution
The fourth proportional to 100,072,623.98, 138,029,028.54 and 91,839,273.68 is: 126,672,862.40
Step by Step Solution
- Step 1: Write the proportion equation
100,072,623.98 : 138,029,028.54 = 91,839,273.68 : x - Step 2: Convert to fraction form
100,072,623.98/138,029,028.54 = 91,839,273.68/x - Step 3: Cross multiply
100,072,623.98x = 138,029,028.54 × 91,839,273.68 - Step 4: Simplify right side
100,072,623.98x = 12,676,485,727,869,592 - Step 5: Solve for x
x = 12,676,485,727,869,592/100,072,623.98 - Step 6: Final answer
x = 126,672,862.40
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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.