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Finding the Fourth Proportional to 123,139.32, 169,932.33 and 66,550.74

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Solution

The fourth proportional to 123,139.32, 169,932.33 and 66,550.74 is: 91,840.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,139.32 : 169,932.33 = 66,550.74 : x
  2. Step 2: Convert to fraction form
    123,139.32/169,932.33 = 66,550.74/x
  3. Step 3: Cross multiply
    123,139.32x = 169,932.33 × 66,550.74
  4. Step 4: Simplify right side
    123,139.32x = 11,309,122,311.42
  5. Step 5: Solve for x
    x = 11,309,122,311.42/123,139.32
  6. Step 6: Final answer
    x = 91,840.06

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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.