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Finding the Fourth Proportional to 123,563.16, 170,517.78 and 66,974.04

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Solution

The fourth proportional to 123,563.16, 170,517.78 and 66,974.04 is: 92,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,563.16 : 170,517.78 = 66,974.04 : x
  2. Step 2: Convert to fraction form
    123,563.16/170,517.78 = 66,974.04/x
  3. Step 3: Cross multiply
    123,563.16x = 170,517.78 × 66,974.04
  4. Step 4: Simplify right side
    123,563.16x = 11,420,264,618.43
  5. Step 5: Solve for x
    x = 11,420,264,618.43/123,563.16
  6. Step 6: Final answer
    x = 92,424.51

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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.