Home / 129,589.28-178,832.41-73,018.88

Finding the Fourth Proportional to 129,589.28, 178,832.41 and 73,018.88

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Solution

The fourth proportional to 129,589.28, 178,832.41 and 73,018.88 is: 100,765.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,589.28 : 178,832.41 = 73,018.88 : x
  2. Step 2: Convert to fraction form
    129,589.28/178,832.41 = 73,018.88/x
  3. Step 3: Cross multiply
    129,589.28x = 178,832.41 × 73,018.88
  4. Step 4: Simplify right side
    129,589.28x = 13,058,142,285.90
  5. Step 5: Solve for x
    x = 13,058,142,285.90/129,589.28
  6. Step 6: Final answer
    x = 100,765.61

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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.