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Finding the Fourth Proportional to 123,061.36, 169,824.80 and 66,472.80

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Solution

The fourth proportional to 123,061.36, 169,824.80 and 66,472.80 is: 91,732.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,061.36 : 169,824.80 = 66,472.80 : x
  2. Step 2: Convert to fraction form
    123,061.36/169,824.80 = 66,472.80/x
  3. Step 3: Cross multiply
    123,061.36x = 169,824.80 × 66,472.80
  4. Step 4: Simplify right side
    123,061.36x = 11,288,729,965.44
  5. Step 5: Solve for x
    x = 11,288,729,965.44/123,061.36
  6. Step 6: Final answer
    x = 91,732.53

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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.