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Finding the Fourth Proportional to 115,251.56, 172,942.92 and 92,025.60

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Solution

The fourth proportional to 115,251.56, 172,942.92 and 92,025.60 is: 138,090.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,251.56 : 172,942.92 = 92,025.60 : x
  2. Step 2: Convert to fraction form
    115,251.56/172,942.92 = 92,025.60/x
  3. Step 3: Cross multiply
    115,251.56x = 172,942.92 × 92,025.60
  4. Step 4: Simplify right side
    115,251.56x = 15,915,175,978.75
  5. Step 5: Solve for x
    x = 15,915,175,978.75/115,251.56
  6. Step 6: Final answer
    x = 138,090.76

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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.