Finding the Fourth Proportional to 100,167.99, 138,231.78 and 54,845.95
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Solution
The fourth proportional to 100,167.99, 138,231.78 and 54,845.95 is: 75,687.39
Step by Step Solution
- Step 1: Write the proportion equation
100,167.99 : 138,231.78 = 54,845.95 : x - Step 2: Convert to fraction form
100,167.99/138,231.78 = 54,845.95/x - Step 3: Cross multiply
100,167.99x = 138,231.78 × 54,845.95 - Step 4: Simplify right side
100,167.99x = 7,581,453,294.29 - Step 5: Solve for x
x = 7,581,453,294.29/100,167.99 - Step 6: Final answer
x = 75,687.39
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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.