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Finding the Fourth Proportional to 123,791.50, 170,834.34 and 67,202.88

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Solution

The fourth proportional to 123,791.50, 170,834.34 and 67,202.88 is: 92,741.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,791.50 : 170,834.34 = 67,202.88 : x
  2. Step 2: Convert to fraction form
    123,791.50/170,834.34 = 67,202.88/x
  3. Step 3: Cross multiply
    123,791.50x = 170,834.34 × 67,202.88
  4. Step 4: Simplify right side
    123,791.50x = 11,480,559,650.90
  5. Step 5: Solve for x
    x = 11,480,559,650.90/123,791.50
  6. Step 6: Final answer
    x = 92,741.10

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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.