Home / 80,920.13-121,380.19-25,516.13

Finding the Fourth Proportional to 80,920.13, 121,380.19 and 25,516.13

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Solution

The fourth proportional to 80,920.13, 121,380.19 and 25,516.13 is: 38,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,920.13 : 121,380.19 = 25,516.13 : x
  2. Step 2: Convert to fraction form
    80,920.13/121,380.19 = 25,516.13/x
  3. Step 3: Cross multiply
    80,920.13x = 121,380.19 × 25,516.13
  4. Step 4: Simplify right side
    80,920.13x = 3,097,152,036.77
  5. Step 5: Solve for x
    x = 3,097,152,036.77/80,920.13
  6. Step 6: Final answer
    x = 38,274.19

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Similar ratio
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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.