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Finding the Fourth Proportional to 123,757.16, 170,786.86 and 67,168.54

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Solution

The fourth proportional to 123,757.16, 170,786.86 and 67,168.54 is: 92,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,757.16 : 170,786.86 = 67,168.54 : x
  2. Step 2: Convert to fraction form
    123,757.16/170,786.86 = 67,168.54/x
  3. Step 3: Cross multiply
    123,757.16x = 170,786.86 × 67,168.54
  4. Step 4: Simplify right side
    123,757.16x = 11,471,503,183.45
  5. Step 5: Solve for x
    x = 11,471,503,183.45/123,757.16
  6. Step 6: Final answer
    x = 92,693.65

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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.