Home / 156,171.38-234,020.55-103,391.78

Finding the Fourth Proportional to 156,171.38, 234,020.55 and 103,391.78

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Solution

The fourth proportional to 156,171.38, 234,020.55 and 103,391.78 is: 154,931.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,171.38 : 234,020.55 = 103,391.78 : x
  2. Step 2: Convert to fraction form
    156,171.38/234,020.55 = 103,391.78/x
  3. Step 3: Cross multiply
    156,171.38x = 234,020.55 × 103,391.78
  4. Step 4: Simplify right side
    156,171.38x = 24,195,801,221.08
  5. Step 5: Solve for x
    x = 24,195,801,221.08/156,171.38
  6. Step 6: Final answer
    x = 154,931.08

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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.