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Finding the Fourth Proportional to 125,857.44, 188,787.60 and 42,757.92

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Solution

The fourth proportional to 125,857.44, 188,787.60 and 42,757.92 is: 64,137.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,857.44 : 188,787.60 = 42,757.92 : x
  2. Step 2: Convert to fraction form
    125,857.44/188,787.60 = 42,757.92/x
  3. Step 3: Cross multiply
    125,857.44x = 188,787.60 × 42,757.92
  4. Step 4: Simplify right side
    125,857.44x = 8,072,165,097.79
  5. Step 5: Solve for x
    x = 8,072,165,097.79/125,857.44
  6. Step 6: Final answer
    x = 64,137.37

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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.