Home / 129,558.13-194,337.20-74,115.25

Finding the Fourth Proportional to 129,558.13, 194,337.20 and 74,115.25

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Solution

The fourth proportional to 129,558.13, 194,337.20 and 74,115.25 is: 111,172.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,558.13 : 194,337.20 = 74,115.25 : x
  2. Step 2: Convert to fraction form
    129,558.13/194,337.20 = 74,115.25/x
  3. Step 3: Cross multiply
    129,558.13x = 194,337.20 × 74,115.25
  4. Step 4: Simplify right side
    129,558.13x = 14,403,349,791.72
  5. Step 5: Solve for x
    x = 14,403,349,791.72/129,558.13
  6. Step 6: Final answer
    x = 111,172.88

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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.