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Finding the Fourth Proportional to 123,469.89, 170,388.46 and 66,881.26

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Solution

The fourth proportional to 123,469.89, 170,388.46 and 66,881.26 is: 92,296.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,469.89 : 170,388.46 = 66,881.26 : x
  2. Step 2: Convert to fraction form
    123,469.89/170,388.46 = 66,881.26/x
  3. Step 3: Cross multiply
    123,469.89x = 170,388.46 × 66,881.26
  4. Step 4: Simplify right side
    123,469.89x = 11,395,795,190.85
  5. Step 5: Solve for x
    x = 11,395,795,190.85/123,469.89
  6. Step 6: Final answer
    x = 92,296.15

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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.