Home / 129,552.90-178,778.79-79,251.90

Finding the Fourth Proportional to 129,552.90, 178,778.79 and 79,251.90

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Solution

The fourth proportional to 129,552.90, 178,778.79 and 79,251.90 is: 109,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,552.90 : 178,778.79 = 79,251.90 : x
  2. Step 2: Convert to fraction form
    129,552.90/178,778.79 = 79,251.90/x
  3. Step 3: Cross multiply
    129,552.90x = 178,778.79 × 79,251.90
  4. Step 4: Simplify right side
    129,552.90x = 14,168,558,787.20
  5. Step 5: Solve for x
    x = 14,168,558,787.20/129,552.90
  6. Step 6: Final answer
    x = 109,365.05

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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.