Finding the Fourth Proportional to 134,781.80, 202,391.40 and 75,732.80
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Solution
The fourth proportional to 134,781.80, 202,391.40 and 75,732.80 is: 113,722.09
Step by Step Solution
- Step 1: Write the proportion equation
134,781.80 : 202,391.40 = 75,732.80 : x - Step 2: Convert to fraction form
134,781.80/202,391.40 = 75,732.80/x - Step 3: Cross multiply
134,781.80x = 202,391.40 × 75,732.80 - Step 4: Simplify right side
134,781.80x = 15,327,667,417.92 - Step 5: Solve for x
x = 15,327,667,417.92/134,781.80 - Step 6: Final answer
x = 113,722.09
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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.