Finding the Fourth Proportional to 138,979.99, 191,691.12 and 88,001.02
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Solution
The fourth proportional to 138,979.99, 191,691.12 and 88,001.02 is: 121,377.29
Step by Step Solution
- Step 1: Write the proportion equation
138,979.99 : 191,691.12 = 88,001.02 : x - Step 2: Convert to fraction form
138,979.99/191,691.12 = 88,001.02/x - Step 3: Cross multiply
138,979.99x = 191,691.12 × 88,001.02 - Step 4: Simplify right side
138,979.99x = 16,869,014,084.94 - Step 5: Solve for x
x = 16,869,014,084.94/138,979.99 - Step 6: Final answer
x = 121,377.29
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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.