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Finding the Third Proportional to 82,856.25 and 129,615.75

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Solution

The third proportional to 82,856.25 and 129,615.75 is: 202,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,856.25 : 129,615.75 = 129,615.75 : x
  2. Step 2: Convert to fraction form
    82,856.25/129,615.75 = 129,615.75/x
  3. Step 3: Cross multiply
    82,856.25x = 129,615.75 × 129,615.75
  4. Step 4: Simplify right side
    82,856.25x = 16,800,242,648.06
  5. Step 5: Solve for x
    x = 16,800,242,648.06/82,856.25
  6. Step 6: Final answer
    x = 202,763.73

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.