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Finding the Fourth Proportional to 122,242.80, 168,691.82 and 68,531.30

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Solution

The fourth proportional to 122,242.80, 168,691.82 and 68,531.30 is: 94,571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,242.80 : 168,691.82 = 68,531.30 : x
  2. Step 2: Convert to fraction form
    122,242.80/168,691.82 = 68,531.30/x
  3. Step 3: Cross multiply
    122,242.80x = 168,691.82 × 68,531.30
  4. Step 4: Simplify right side
    122,242.80x = 11,560,668,537.85
  5. Step 5: Solve for x
    x = 11,560,668,537.85/122,242.80
  6. Step 6: Final answer
    x = 94,571.37

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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.