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Finding the Fourth Proportional to 122,243.56, 168,691.30 and 69,251.56

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Solution

The fourth proportional to 122,243.56, 168,691.30 and 69,251.56 is: 95,564.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,243.56 : 168,691.30 = 69,251.56 : x
  2. Step 2: Convert to fraction form
    122,243.56/168,691.30 = 69,251.56/x
  3. Step 3: Cross multiply
    122,243.56x = 168,691.30 × 69,251.56
  4. Step 4: Simplify right side
    122,243.56x = 11,682,135,683.43
  5. Step 5: Solve for x
    x = 11,682,135,683.43/122,243.56
  6. Step 6: Final answer
    x = 95,564.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.