Finding the Fourth Proportional to 100,269.19, 138,371.49 and 55,557.19
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Solution
The fourth proportional to 100,269.19, 138,371.49 and 55,557.19 is: 76,668.92
Step by Step Solution
- Step 1: Write the proportion equation
100,269.19 : 138,371.49 = 55,557.19 : x - Step 2: Convert to fraction form
100,269.19/138,371.49 = 55,557.19/x - Step 3: Cross multiply
100,269.19x = 138,371.49 × 55,557.19 - Step 4: Simplify right side
100,269.19x = 7,687,530,882.73 - Step 5: Solve for x
x = 7,687,530,882.73/100,269.19 - Step 6: Final answer
x = 76,668.92
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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.