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Finding the Fourth Proportional to 123,760.60, 170,788.58 and 67,170.76

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Solution

The fourth proportional to 123,760.60, 170,788.58 and 67,170.76 is: 92,695.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,760.60 : 170,788.58 = 67,170.76 : x
  2. Step 2: Convert to fraction form
    123,760.60/170,788.58 = 67,170.76/x
  3. Step 3: Cross multiply
    123,760.60x = 170,788.58 × 67,170.76
  4. Step 4: Simplify right side
    123,760.60x = 11,471,998,717.92
  5. Step 5: Solve for x
    x = 11,471,998,717.92/123,760.60
  6. Step 6: Final answer
    x = 92,695.08

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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.