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Finding the Fourth Proportional to 123,759.29, 170,787.99 and 67,170.67

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Solution

The fourth proportional to 123,759.29, 170,787.99 and 67,170.67 is: 92,695.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,759.29 : 170,787.99 = 67,170.67 : x
  2. Step 2: Convert to fraction form
    123,759.29/170,787.99 = 67,170.67/x
  3. Step 3: Cross multiply
    123,759.29x = 170,787.99 × 67,170.67
  4. Step 4: Simplify right side
    123,759.29x = 11,471,943,716.25
  5. Step 5: Solve for x
    x = 11,471,943,716.25/123,759.29
  6. Step 6: Final answer
    x = 92,695.62

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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.