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Finding the Third Proportional to 81,873 and 130,190

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Solution

The third proportional to 81,873 and 130,190 is: 207,021.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,873 : 130,190 = 130,190 : x
  2. Step 2: Convert to fraction form
    81,873/130,190 = 130,190/x
  3. Step 3: Cross multiply
    81,873x = 130,190 × 130,190
  4. Step 4: Simplify right side
    81,873x = 16,949,436,100
  5. Step 5: Solve for x
    x = 16,949,436,100/81,873
  6. Step 6: Final answer
    x = 207,021.07

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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.