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Finding the Fourth Proportional to 172,608.38, 258,792.24 and 76,493.26

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Solution

The fourth proportional to 172,608.38, 258,792.24 and 76,493.26 is: 114,686.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,608.38 : 258,792.24 = 76,493.26 : x
  2. Step 2: Convert to fraction form
    172,608.38/258,792.24 = 76,493.26/x
  3. Step 3: Cross multiply
    172,608.38x = 258,792.24 × 76,493.26
  4. Step 4: Simplify right side
    172,608.38x = 19,795,862,100.30
  5. Step 5: Solve for x
    x = 19,795,862,100.30/172,608.38
  6. Step 6: Final answer
    x = 114,686.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.