Finding the Fourth Proportional to 100,162.44, 138,148.74 and 88,177.68
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Solution
The fourth proportional to 100,162.44, 138,148.74 and 88,177.68 is: 121,618.80
Step by Step Solution
- Step 1: Write the proportion equation
100,162.44 : 138,148.74 = 88,177.68 : x - Step 2: Convert to fraction form
100,162.44/138,148.74 = 88,177.68/x - Step 3: Cross multiply
100,162.44x = 138,148.74 × 88,177.68 - Step 4: Simplify right side
100,162.44x = 12,181,635,388.12 - Step 5: Solve for x
x = 12,181,635,388.12/100,162.44 - Step 6: Final answer
x = 121,618.80
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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.