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Finding the Fourth Proportional to 123,383.42, 170,269.67 and 66,794.79

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Solution

The fourth proportional to 123,383.42, 170,269.67 and 66,794.79 is: 92,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,383.42 : 170,269.67 = 66,794.79 : x
  2. Step 2: Convert to fraction form
    123,383.42/170,269.67 = 66,794.79/x
  3. Step 3: Cross multiply
    123,383.42x = 170,269.67 × 66,794.79
  4. Step 4: Simplify right side
    123,383.42x = 11,373,126,517.05
  5. Step 5: Solve for x
    x = 11,373,126,517.05/123,383.42
  6. Step 6: Final answer
    x = 92,177.11

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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.