Home / 129,255.24-178,251.84-83,884.72

Finding the Fourth Proportional to 129,255.24, 178,251.84 and 83,884.72

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Solution

The fourth proportional to 129,255.24, 178,251.84 and 83,884.72 is: 115,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,255.24 : 178,251.84 = 83,884.72 : x
  2. Step 2: Convert to fraction form
    129,255.24/178,251.84 = 83,884.72/x
  3. Step 3: Cross multiply
    129,255.24x = 178,251.84 × 83,884.72
  4. Step 4: Simplify right side
    129,255.24x = 14,952,605,687.88
  5. Step 5: Solve for x
    x = 14,952,605,687.88/129,255.24
  6. Step 6: Final answer
    x = 115,682.78

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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.