Home / 231,023.62-318,778.68-129,036.52

Finding the Fourth Proportional to 231,023.62, 318,778.68 and 129,036.52

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Solution

The fourth proportional to 231,023.62, 318,778.68 and 129,036.52 is: 178,051.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,023.62 : 318,778.68 = 129,036.52 : x
  2. Step 2: Convert to fraction form
    231,023.62/318,778.68 = 129,036.52/x
  3. Step 3: Cross multiply
    231,023.62x = 318,778.68 × 129,036.52
  4. Step 4: Simplify right side
    231,023.62x = 41,134,091,517.39
  5. Step 5: Solve for x
    x = 41,134,091,517.39/231,023.62
  6. Step 6: Final answer
    x = 178,051.45

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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.