Finding the Fourth Proportional to 138,370.13, 207,620.81 and 82,320.97
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Solution
The fourth proportional to 138,370.13, 207,620.81 and 82,320.97 is: 123,520.49
Step by Step Solution
- Step 1: Write the proportion equation
138,370.13 : 207,620.81 = 82,320.97 : x - Step 2: Convert to fraction form
138,370.13/207,620.81 = 82,320.97/x - Step 3: Cross multiply
138,370.13x = 207,620.81 × 82,320.97 - Step 4: Simplify right side
138,370.13x = 17,091,546,471.39 - Step 5: Solve for x
x = 17,091,546,471.39/138,370.13 - Step 6: Final answer
x = 123,520.49
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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.