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Finding the Third Proportional to 82,138.50 and 117,375.75

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Solution

The third proportional to 82,138.50 and 117,375.75 is: 167,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,138.50 : 117,375.75 = 117,375.75 : x
  2. Step 2: Convert to fraction form
    82,138.50/117,375.75 = 117,375.75/x
  3. Step 3: Cross multiply
    82,138.50x = 117,375.75 × 117,375.75
  4. Step 4: Simplify right side
    82,138.50x = 13,777,066,688.06
  5. Step 5: Solve for x
    x = 13,777,066,688.06/82,138.50
  6. Step 6: Final answer
    x = 167,729.71

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.