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Finding the Fourth Proportional to 123,871.92, 170,943.96 and 67,283.76

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Solution

The fourth proportional to 123,871.92, 170,943.96 and 67,283.76 is: 92,851.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,871.92 : 170,943.96 = 67,283.76 : x
  2. Step 2: Convert to fraction form
    123,871.92/170,943.96 = 67,283.76/x
  3. Step 3: Cross multiply
    123,871.92x = 170,943.96 × 67,283.76
  4. Step 4: Simplify right side
    123,871.92x = 11,501,752,378.09
  5. Step 5: Solve for x
    x = 11,501,752,378.09/123,871.92
  6. Step 6: Final answer
    x = 92,851.97

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1.5x scale

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.