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Finding the Third Proportional to 81,696.50 and 170,874.50

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Solution

The third proportional to 81,696.50 and 170,874.50 is: 357,397.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,696.50 : 170,874.50 = 170,874.50 : x
  2. Step 2: Convert to fraction form
    81,696.50/170,874.50 = 170,874.50/x
  3. Step 3: Cross multiply
    81,696.50x = 170,874.50 × 170,874.50
  4. Step 4: Simplify right side
    81,696.50x = 29,198,094,750.25
  5. Step 5: Solve for x
    x = 29,198,094,750.25/81,696.50
  6. Step 6: Final answer
    x = 357,397.13

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.