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Finding the Fourth Proportional to 125,562.10, 188,343.15 and 115,939.30

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Solution

The fourth proportional to 125,562.10, 188,343.15 and 115,939.30 is: 173,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,562.10 : 188,343.15 = 115,939.30 : x
  2. Step 2: Convert to fraction form
    125,562.10/188,343.15 = 115,939.30/x
  3. Step 3: Cross multiply
    125,562.10x = 188,343.15 × 115,939.30
  4. Step 4: Simplify right side
    125,562.10x = 21,836,372,970.80
  5. Step 5: Solve for x
    x = 21,836,372,970.80/125,562.10
  6. Step 6: Final answer
    x = 173,908.95

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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.