Home / 138,128.20-207,146.94-43,358.20

Finding the Fourth Proportional to 138,128.20, 207,146.94 and 43,358.20

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Solution

The fourth proportional to 138,128.20, 207,146.94 and 43,358.20 is: 65,023.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,128.20 : 207,146.94 = 43,358.20 : x
  2. Step 2: Convert to fraction form
    138,128.20/207,146.94 = 43,358.20/x
  3. Step 3: Cross multiply
    138,128.20x = 207,146.94 × 43,358.20
  4. Step 4: Simplify right side
    138,128.20x = 8,981,518,453.91
  5. Step 5: Solve for x
    x = 8,981,518,453.91/138,128.20
  6. Step 6: Final answer
    x = 65,023.06

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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.