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Finding the Fourth Proportional to 123,871.26, 170,943.24 and 67,282.65

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Solution

The fourth proportional to 123,871.26, 170,943.24 and 67,282.65 is: 92,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,871.26 : 170,943.24 = 67,282.65 : x
  2. Step 2: Convert to fraction form
    123,871.26/170,943.24 = 67,282.65/x
  3. Step 3: Cross multiply
    123,871.26x = 170,943.24 × 67,282.65
  4. Step 4: Simplify right side
    123,871.26x = 11,501,514,186.79
  5. Step 5: Solve for x
    x = 11,501,514,186.79/123,871.26
  6. Step 6: Final answer
    x = 92,850.55

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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.