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Finding the Fourth Proportional to 123,754.17, 170,751.18 and 75,355.52

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Solution

The fourth proportional to 123,754.17, 170,751.18 and 75,355.52 is: 103,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,754.17 : 170,751.18 = 75,355.52 : x
  2. Step 2: Convert to fraction form
    123,754.17/170,751.18 = 75,355.52/x
  3. Step 3: Cross multiply
    123,754.17x = 170,751.18 × 75,355.52
  4. Step 4: Simplify right side
    123,754.17x = 12,867,042,728.98
  5. Step 5: Solve for x
    x = 12,867,042,728.98/123,754.17
  6. Step 6: Final answer
    x = 103,972.60

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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.