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Finding the Fourth Proportional to 123,759.26, 170,787.86 and 67,170.63

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Solution

The fourth proportional to 123,759.26, 170,787.86 and 67,170.63 is: 92,695.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,759.26 : 170,787.86 = 67,170.63 : x
  2. Step 2: Convert to fraction form
    123,759.26/170,787.86 = 67,170.63/x
  3. Step 3: Cross multiply
    123,759.26x = 170,787.86 × 67,170.63
  4. Step 4: Simplify right side
    123,759.26x = 11,471,927,816.70
  5. Step 5: Solve for x
    x = 11,471,927,816.70/123,759.26
  6. Step 6: Final answer
    x = 92,695.51

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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.