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Finding the Third Proportional to 113,912 and 172,569

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Solution

The third proportional to 113,912 and 172,569 is: 261,430.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,912 : 172,569 = 172,569 : x
  2. Step 2: Convert to fraction form
    113,912/172,569 = 172,569/x
  3. Step 3: Cross multiply
    113,912x = 172,569 × 172,569
  4. Step 4: Simplify right side
    113,912x = 29,780,059,761
  5. Step 5: Solve for x
    x = 29,780,059,761/113,912
  6. Step 6: Final answer
    x = 261,430.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.