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Finding the Third Proportional to 75,381.75 and 102,375

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Solution

The third proportional to 75,381.75 and 102,375 is: 139,034.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,381.75 : 102,375 = 102,375 : x
  2. Step 2: Convert to fraction form
    75,381.75/102,375 = 102,375/x
  3. Step 3: Cross multiply
    75,381.75x = 102,375 × 102,375
  4. Step 4: Simplify right side
    75,381.75x = 10,480,640,625
  5. Step 5: Solve for x
    x = 10,480,640,625/75,381.75
  6. Step 6: Final answer
    x = 139,034.19

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.