Finding the Fourth Proportional to 138,923.92, 208,385.88 and 50,177.08
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Solution
The fourth proportional to 138,923.92, 208,385.88 and 50,177.08 is: 75,265.62
Step by Step Solution
- Step 1: Write the proportion equation
138,923.92 : 208,385.88 = 50,177.08 : x - Step 2: Convert to fraction form
138,923.92/208,385.88 = 50,177.08/x - Step 3: Cross multiply
138,923.92x = 208,385.88 × 50,177.08 - Step 4: Simplify right side
138,923.92x = 10,456,194,971.63 - Step 5: Solve for x
x = 10,456,194,971.63/138,923.92 - Step 6: Final answer
x = 75,265.62
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.