Finding the Fourth Proportional to 100,284.14, 138,387.79 and 59,974.09
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Solution
The fourth proportional to 100,284.14, 138,387.79 and 59,974.09 is: 82,761.65
Step by Step Solution
- Step 1: Write the proportion equation
100,284.14 : 138,387.79 = 59,974.09 : x - Step 2: Convert to fraction form
100,284.14/138,387.79 = 59,974.09/x - Step 3: Cross multiply
100,284.14x = 138,387.79 × 59,974.09 - Step 4: Simplify right side
100,284.14x = 8,299,681,501.36 - Step 5: Solve for x
x = 8,299,681,501.36/100,284.14 - Step 6: Final answer
x = 82,761.65
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1.5x scale
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.