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Finding the Fourth Proportional to 123,763.01, 170,787.05 and 76,007.13

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Solution

The fourth proportional to 123,763.01, 170,787.05 and 76,007.13 is: 104,886.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,763.01 : 170,787.05 = 76,007.13 : x
  2. Step 2: Convert to fraction form
    123,763.01/170,787.05 = 76,007.13/x
  3. Step 3: Cross multiply
    123,763.01x = 170,787.05 × 76,007.13
  4. Step 4: Simplify right side
    123,763.01x = 12,981,034,217.22
  5. Step 5: Solve for x
    x = 12,981,034,217.22/123,763.01
  6. Step 6: Final answer
    x = 104,886.22

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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.