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Finding the Fourth Proportional to 147,451.32, 220,791.42 and 80,752.68

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Solution

The fourth proportional to 147,451.32, 220,791.42 and 80,752.68 is: 120,917.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,451.32 : 220,791.42 = 80,752.68 : x
  2. Step 2: Convert to fraction form
    147,451.32/220,791.42 = 80,752.68/x
  3. Step 3: Cross multiply
    147,451.32x = 220,791.42 × 80,752.68
  4. Step 4: Simplify right side
    147,451.32x = 17,829,498,886.01
  5. Step 5: Solve for x
    x = 17,829,498,886.01/147,451.32
  6. Step 6: Final answer
    x = 120,917.87

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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.