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Finding the Fourth Proportional to 123,875, 170,950.62 and 67,286.36

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Solution

The fourth proportional to 123,875, 170,950.62 and 67,286.36 is: 92,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,875 : 170,950.62 = 67,286.36 : x
  2. Step 2: Convert to fraction form
    123,875/170,950.62 = 67,286.36/x
  3. Step 3: Cross multiply
    123,875x = 170,950.62 × 67,286.36
  4. Step 4: Simplify right side
    123,875x = 11,502,644,959.54
  5. Step 5: Solve for x
    x = 11,502,644,959.54/123,875
  6. Step 6: Final answer
    x = 92,856.87

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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.