Home / 129,321.31-178,545.39-88,553.65

Finding the Fourth Proportional to 129,321.31, 178,545.39 and 88,553.65

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Solution

The fourth proportional to 129,321.31, 178,545.39 and 88,553.65 is: 122,260.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,321.31 : 178,545.39 = 88,553.65 : x
  2. Step 2: Convert to fraction form
    129,321.31/178,545.39 = 88,553.65/x
  3. Step 3: Cross multiply
    129,321.31x = 178,545.39 × 88,553.65
  4. Step 4: Simplify right side
    129,321.31x = 15,810,845,975.17
  5. Step 5: Solve for x
    x = 15,810,845,975.17/129,321.31
  6. Step 6: Final answer
    x = 122,260.17

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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.