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Finding the Fourth Proportional to 123,563.50, 170,517.99 and 66,975.10

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Solution

The fourth proportional to 123,563.50, 170,517.99 and 66,975.10 is: 92,425.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,563.50 : 170,517.99 = 66,975.10 : x
  2. Step 2: Convert to fraction form
    123,563.50/170,517.99 = 66,975.10/x
  3. Step 3: Cross multiply
    123,563.50x = 170,517.99 × 66,975.10
  4. Step 4: Simplify right side
    123,563.50x = 11,420,459,432.05
  5. Step 5: Solve for x
    x = 11,420,459,432.05/123,563.50
  6. Step 6: Final answer
    x = 92,425.83

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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.