Home / 129,517.26-178,747.47-75,819.66

Finding the Fourth Proportional to 129,517.26, 178,747.47 and 75,819.66

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Solution

The fourth proportional to 129,517.26, 178,747.47 and 75,819.66 is: 104,639.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,517.26 : 178,747.47 = 75,819.66 : x
  2. Step 2: Convert to fraction form
    129,517.26/178,747.47 = 75,819.66/x
  3. Step 3: Cross multiply
    129,517.26x = 178,747.47 × 75,819.66
  4. Step 4: Simplify right side
    129,517.26x = 13,552,572,401.26
  5. Step 5: Solve for x
    x = 13,552,572,401.26/129,517.26
  6. Step 6: Final answer
    x = 104,639.12

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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.