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Finding the Fourth Proportional to 123,765.43, 170,791.72 and 67,175.59

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Solution

The fourth proportional to 123,765.43, 170,791.72 and 67,175.59 is: 92,699.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,765.43 : 170,791.72 = 67,175.59 : x
  2. Step 2: Convert to fraction form
    123,765.43/170,791.72 = 67,175.59/x
  3. Step 3: Cross multiply
    123,765.43x = 170,791.72 × 67,175.59
  4. Step 4: Simplify right side
    123,765.43x = 11,473,034,558.11
  5. Step 5: Solve for x
    x = 11,473,034,558.11/123,765.43
  6. Step 6: Final answer
    x = 92,699.83

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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.