Home / 129,154.56-178,233.15-71,792.11

Finding the Fourth Proportional to 129,154.56, 178,233.15 and 71,792.11

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Solution

The fourth proportional to 129,154.56, 178,233.15 and 71,792.11 is: 99,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,154.56 : 178,233.15 = 71,792.11 : x
  2. Step 2: Convert to fraction form
    129,154.56/178,233.15 = 71,792.11/x
  3. Step 3: Cross multiply
    129,154.56x = 178,233.15 × 71,792.11
  4. Step 4: Simplify right side
    129,154.56x = 12,795,733,910.45
  5. Step 5: Solve for x
    x = 12,795,733,910.45/129,154.56
  6. Step 6: Final answer
    x = 99,073.03

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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.