Finding the Fourth Proportional to 100,115.14, 138,151.02 and 57,677.08
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Solution
The fourth proportional to 100,115.14, 138,151.02 and 57,677.08 is: 79,589.83
Step by Step Solution
- Step 1: Write the proportion equation
100,115.14 : 138,151.02 = 57,677.08 : x - Step 2: Convert to fraction form
100,115.14/138,151.02 = 57,677.08/x - Step 3: Cross multiply
100,115.14x = 138,151.02 × 57,677.08 - Step 4: Simplify right side
100,115.14x = 7,968,147,432.62 - Step 5: Solve for x
x = 7,968,147,432.62/100,115.14 - Step 6: Final answer
x = 79,589.83
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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.