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Finding the Third Proportional to 75,387.75 and 102,384

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Solution

The third proportional to 75,387.75 and 102,384 is: 139,047.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,387.75 : 102,384 = 102,384 : x
  2. Step 2: Convert to fraction form
    75,387.75/102,384 = 102,384/x
  3. Step 3: Cross multiply
    75,387.75x = 102,384 × 102,384
  4. Step 4: Simplify right side
    75,387.75x = 10,482,483,456
  5. Step 5: Solve for x
    x = 10,482,483,456/75,387.75
  6. Step 6: Final answer
    x = 139,047.57

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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.