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Finding the Fourth Proportional to 123,758.79, 170,787.29 and 67,170.18

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Solution

The fourth proportional to 123,758.79, 170,787.29 and 67,170.18 is: 92,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,758.79 : 170,787.29 = 67,170.18 : x
  2. Step 2: Convert to fraction form
    123,758.79/170,787.29 = 67,170.18/x
  3. Step 3: Cross multiply
    123,758.79x = 170,787.29 × 67,170.18
  4. Step 4: Simplify right side
    123,758.79x = 11,471,812,675.16
  5. Step 5: Solve for x
    x = 11,471,812,675.16/123,758.79
  6. Step 6: Final answer
    x = 92,694.93

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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.