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Finding the Fourth Proportional to 123,086.28, 169,859.10 and 66,497.64

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Solution

The fourth proportional to 123,086.28, 169,859.10 and 66,497.64 is: 91,766.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,086.28 : 169,859.10 = 66,497.64 : x
  2. Step 2: Convert to fraction form
    123,086.28/169,859.10 = 66,497.64/x
  3. Step 3: Cross multiply
    123,086.28x = 169,859.10 × 66,497.64
  4. Step 4: Simplify right side
    123,086.28x = 11,295,229,282.52
  5. Step 5: Solve for x
    x = 11,295,229,282.52/123,086.28
  6. Step 6: Final answer
    x = 91,766.76

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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.