Finding the Fourth Proportional to 138,356.70, 207,535.05 and 125,890.80
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Solution
The fourth proportional to 138,356.70, 207,535.05 and 125,890.80 is: 188,836.20
Step by Step Solution
- Step 1: Write the proportion equation
138,356.70 : 207,535.05 = 125,890.80 : x - Step 2: Convert to fraction form
138,356.70/207,535.05 = 125,890.80/x - Step 3: Cross multiply
138,356.70x = 207,535.05 × 125,890.80 - Step 4: Simplify right side
138,356.70x = 26,126,753,472.54 - Step 5: Solve for x
x = 26,126,753,472.54/138,356.70 - Step 6: Final answer
x = 188,836.20
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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.