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Finding the Third Proportional to 81,743 and 176,386

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Solution

The third proportional to 81,743 and 176,386 is: 380,607.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,743 : 176,386 = 176,386 : x
  2. Step 2: Convert to fraction form
    81,743/176,386 = 176,386/x
  3. Step 3: Cross multiply
    81,743x = 176,386 × 176,386
  4. Step 4: Simplify right side
    81,743x = 31,112,020,996
  5. Step 5: Solve for x
    x = 31,112,020,996/81,743
  6. Step 6: Final answer
    x = 380,607.77

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.