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Finding the Fourth Proportional to 123,757.40, 170,784.18 and 67,168.76

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Solution

The fourth proportional to 123,757.40, 170,784.18 and 67,168.76 is: 92,692.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,757.40 : 170,784.18 = 67,168.76 : x
  2. Step 2: Convert to fraction form
    123,757.40/170,784.18 = 67,168.76/x
  3. Step 3: Cross multiply
    123,757.40x = 170,784.18 × 67,168.76
  4. Step 4: Simplify right side
    123,757.40x = 11,471,361,598.22
  5. Step 5: Solve for x
    x = 11,471,361,598.22/123,757.40
  6. Step 6: Final answer
    x = 92,692.33

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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.