Home / 129,546.38-178,769.27-72,182.73

Finding the Fourth Proportional to 129,546.38, 178,769.27 and 72,182.73

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Solution

The fourth proportional to 129,546.38, 178,769.27 and 72,182.73 is: 99,609.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,546.38 : 178,769.27 = 72,182.73 : x
  2. Step 2: Convert to fraction form
    129,546.38/178,769.27 = 72,182.73/x
  3. Step 3: Cross multiply
    129,546.38x = 178,769.27 × 72,182.73
  4. Step 4: Simplify right side
    129,546.38x = 12,904,053,587.79
  5. Step 5: Solve for x
    x = 12,904,053,587.79/129,546.38
  6. Step 6: Final answer
    x = 99,609.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.