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Finding the Third Proportional to 81,972 and 169,055

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Solution

The third proportional to 81,972 and 169,055 is: 348,650.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972 : 169,055 = 169,055 : x
  2. Step 2: Convert to fraction form
    81,972/169,055 = 169,055/x
  3. Step 3: Cross multiply
    81,972x = 169,055 × 169,055
  4. Step 4: Simplify right side
    81,972x = 28,579,593,025
  5. Step 5: Solve for x
    x = 28,579,593,025/81,972
  6. Step 6: Final answer
    x = 348,650.67

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.