Home / 135,622.47-187,149.19-74,358.85

Finding the Fourth Proportional to 135,622.47, 187,149.19 and 74,358.85

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Solution

The fourth proportional to 135,622.47, 187,149.19 and 74,358.85 is: 102,609.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,622.47 : 187,149.19 = 74,358.85 : x
  2. Step 2: Convert to fraction form
    135,622.47/187,149.19 = 74,358.85/x
  3. Step 3: Cross multiply
    135,622.47x = 187,149.19 × 74,358.85
  4. Step 4: Simplify right side
    135,622.47x = 13,916,198,175.04
  5. Step 5: Solve for x
    x = 13,916,198,175.04/135,622.47
  6. Step 6: Final answer
    x = 102,609.83

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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.