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Finding the Fourth Proportional to 123,759.68, 170,788.02 and 67,171.28

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Solution

The fourth proportional to 123,759.68, 170,788.02 and 67,171.28 is: 92,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,759.68 : 170,788.02 = 67,171.28 : x
  2. Step 2: Convert to fraction form
    123,759.68/170,788.02 = 67,171.28/x
  3. Step 3: Cross multiply
    123,759.68x = 170,788.02 × 67,171.28
  4. Step 4: Simplify right side
    123,759.68x = 11,472,049,912.07
  5. Step 5: Solve for x
    x = 11,472,049,912.07/123,759.68
  6. Step 6: Final answer
    x = 92,696.18

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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.