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Finding the Fourth Proportional to 125,212.40, 188,279.40 and 104,937.20

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Solution

The fourth proportional to 125,212.40, 188,279.40 and 104,937.20 is: 157,791.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,212.40 : 188,279.40 = 104,937.20 : x
  2. Step 2: Convert to fraction form
    125,212.40/188,279.40 = 104,937.20/x
  3. Step 3: Cross multiply
    125,212.40x = 188,279.40 × 104,937.20
  4. Step 4: Simplify right side
    125,212.40x = 19,757,513,053.68
  5. Step 5: Solve for x
    x = 19,757,513,053.68/125,212.40
  6. Step 6: Final answer
    x = 157,791.98

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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.