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Finding the Fourth Proportional to 159,761.57, 239,268.74 and 126,256.73

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Solution

The fourth proportional to 159,761.57, 239,268.74 and 126,256.73 is: 189,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,761.57 : 239,268.74 = 126,256.73 : x
  2. Step 2: Convert to fraction form
    159,761.57/239,268.74 = 126,256.73/x
  3. Step 3: Cross multiply
    159,761.57x = 239,268.74 × 126,256.73
  4. Step 4: Simplify right side
    159,761.57x = 30,209,286,875.99
  5. Step 5: Solve for x
    x = 30,209,286,875.99/159,761.57
  6. Step 6: Final answer
    x = 189,089.83

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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.