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Finding the Fourth Proportional to 123,147.38, 169,943.45 and 66,558.75

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Solution

The fourth proportional to 123,147.38, 169,943.45 and 66,558.75 is: 91,851.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,147.38 : 169,943.45 = 66,558.75 : x
  2. Step 2: Convert to fraction form
    123,147.38/169,943.45 = 66,558.75/x
  3. Step 3: Cross multiply
    123,147.38x = 169,943.45 × 66,558.75
  4. Step 4: Simplify right side
    123,147.38x = 11,311,223,269.89
  5. Step 5: Solve for x
    x = 11,311,223,269.89/123,147.38
  6. Step 6: Final answer
    x = 91,851.11

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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.