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Finding the Fourth Proportional to 123,332.17, 170,231.30 and 69,648.61

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Solution

The fourth proportional to 123,332.17, 170,231.30 and 69,648.61 is: 96,133.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,332.17 : 170,231.30 = 69,648.61 : x
  2. Step 2: Convert to fraction form
    123,332.17/170,231.30 = 69,648.61/x
  3. Step 3: Cross multiply
    123,332.17x = 170,231.30 × 69,648.61
  4. Step 4: Simplify right side
    123,332.17x = 11,856,373,034.15
  5. Step 5: Solve for x
    x = 11,856,373,034.15/123,332.17
  6. Step 6: Final answer
    x = 96,133.66

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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.