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Finding the Fourth Proportional to 124,694.75, 172,079.67 and 68,106.13

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Solution

The fourth proportional to 124,694.75, 172,079.67 and 68,106.13 is: 93,986.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,694.75 : 172,079.67 = 68,106.13 : x
  2. Step 2: Convert to fraction form
    124,694.75/172,079.67 = 68,106.13/x
  3. Step 3: Cross multiply
    124,694.75x = 172,079.67 × 68,106.13
  4. Step 4: Simplify right side
    124,694.75x = 11,719,680,375.38
  5. Step 5: Solve for x
    x = 11,719,680,375.38/124,694.75
  6. Step 6: Final answer
    x = 93,986.96

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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.