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Finding the Fourth Proportional to 123,162.66, 169,963.92 and 66,573.90

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Solution

The fourth proportional to 123,162.66, 169,963.92 and 66,573.90 is: 91,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,162.66 : 169,963.92 = 66,573.90 : x
  2. Step 2: Convert to fraction form
    123,162.66/169,963.92 = 66,573.90/x
  3. Step 3: Cross multiply
    123,162.66x = 169,963.92 × 66,573.90
  4. Step 4: Simplify right side
    123,162.66x = 11,315,161,013.69
  5. Step 5: Solve for x
    x = 11,315,161,013.69/123,162.66
  6. Step 6: Final answer
    x = 91,871.68

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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.