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Finding the Third Proportional to 108,657 and 172,894

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Solution

The third proportional to 108,657 and 172,894 is: 275,107.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,657 : 172,894 = 172,894 : x
  2. Step 2: Convert to fraction form
    108,657/172,894 = 172,894/x
  3. Step 3: Cross multiply
    108,657x = 172,894 × 172,894
  4. Step 4: Simplify right side
    108,657x = 29,892,335,236
  5. Step 5: Solve for x
    x = 29,892,335,236/108,657
  6. Step 6: Final answer
    x = 275,107.31

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.