Finding the Fourth Proportional to 100,179.99, 138,248.37 and 54,857.97
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Solution
The fourth proportional to 100,179.99, 138,248.37 and 54,857.97 is: 75,703.99
Step by Step Solution
- Step 1: Write the proportion equation
100,179.99 : 138,248.37 = 54,857.97 : x - Step 2: Convert to fraction form
100,179.99/138,248.37 = 54,857.97/x - Step 3: Cross multiply
100,179.99x = 138,248.37 × 54,857.97 - Step 4: Simplify right side
100,179.99x = 7,584,024,934.01 - Step 5: Solve for x
x = 7,584,024,934.01/100,179.99 - Step 6: Final answer
x = 75,703.99
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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.