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Finding the Third Proportional to 81,881 and 130,202

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Solution

The third proportional to 81,881 and 130,202 is: 207,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,881 : 130,202 = 130,202 : x
  2. Step 2: Convert to fraction form
    81,881/130,202 = 130,202/x
  3. Step 3: Cross multiply
    81,881x = 130,202 × 130,202
  4. Step 4: Simplify right side
    81,881x = 16,952,560,804
  5. Step 5: Solve for x
    x = 16,952,560,804/81,881
  6. Step 6: Final answer
    x = 207,039.01

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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.