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Finding the Fourth Proportional to 123,469.48, 170,387.58 and 66,881.80

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Solution

The fourth proportional to 123,469.48, 170,387.58 and 66,881.80 is: 92,296.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,469.48 : 170,387.58 = 66,881.80 : x
  2. Step 2: Convert to fraction form
    123,469.48/170,387.58 = 66,881.80/x
  3. Step 3: Cross multiply
    123,469.48x = 170,387.58 × 66,881.80
  4. Step 4: Simplify right side
    123,469.48x = 11,395,828,048.04
  5. Step 5: Solve for x
    x = 11,395,828,048.04/123,469.48
  6. Step 6: Final answer
    x = 92,296.72

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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.