Finding the Fourth Proportional to 100,072,688.08, 138,029,116.84 and 91,839,337.68
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Solution
The fourth proportional to 100,072,688.08, 138,029,116.84 and 91,839,337.68 is: 126,672,950.58
Step by Step Solution
- Step 1: Write the proportion equation
100,072,688.08 : 138,029,116.84 = 91,839,337.68 : x - Step 2: Convert to fraction form
100,072,688.08/138,029,116.84 = 91,839,337.68/x - Step 3: Cross multiply
100,072,688.08x = 138,029,116.84 × 91,839,337.68 - Step 4: Simplify right side
100,072,688.08x = 12,676,502,671,140,936 - Step 5: Solve for x
x = 12,676,502,671,140,936/100,072,688.08 - Step 6: Final answer
x = 126,672,950.58
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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.