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Finding the Fourth Proportional to 125,299.65, 188,042.89 and 50,420.43

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Solution

The fourth proportional to 125,299.65, 188,042.89 and 50,420.43 is: 75,668.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,299.65 : 188,042.89 = 50,420.43 : x
  2. Step 2: Convert to fraction form
    125,299.65/188,042.89 = 50,420.43/x
  3. Step 3: Cross multiply
    125,299.65x = 188,042.89 × 50,420.43
  4. Step 4: Simplify right side
    125,299.65x = 9,481,203,372.24
  5. Step 5: Solve for x
    x = 9,481,203,372.24/125,299.65
  6. Step 6: Final answer
    x = 75,668.24

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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.