Finding the Fourth Proportional to 100,287.01, 138,316.36 and 85,229.52
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Solution
The fourth proportional to 100,287.01, 138,316.36 and 85,229.52 is: 117,548.99
Step by Step Solution
- Step 1: Write the proportion equation
100,287.01 : 138,316.36 = 85,229.52 : x - Step 2: Convert to fraction form
100,287.01/138,316.36 = 85,229.52/x - Step 3: Cross multiply
100,287.01x = 138,316.36 × 85,229.52 - Step 4: Simplify right side
100,287.01x = 11,788,636,398.99 - Step 5: Solve for x
x = 11,788,636,398.99/100,287.01 - Step 6: Final answer
x = 117,548.99
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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.