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Finding the Fourth Proportional to 122,687.62, 169,307.24 and 68,239.27

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Solution

The fourth proportional to 122,687.62, 169,307.24 and 68,239.27 is: 94,169.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,687.62 : 169,307.24 = 68,239.27 : x
  2. Step 2: Convert to fraction form
    122,687.62/169,307.24 = 68,239.27/x
  3. Step 3: Cross multiply
    122,687.62x = 169,307.24 × 68,239.27
  4. Step 4: Simplify right side
    122,687.62x = 11,553,401,765.25
  5. Step 5: Solve for x
    x = 11,553,401,765.25/122,687.62
  6. Step 6: Final answer
    x = 94,169.26

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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.