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Finding the Third Proportional to 79,218 and 120,285

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Solution

The third proportional to 79,218 and 120,285 is: 182,641.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,218 : 120,285 = 120,285 : x
  2. Step 2: Convert to fraction form
    79,218/120,285 = 120,285/x
  3. Step 3: Cross multiply
    79,218x = 120,285 × 120,285
  4. Step 4: Simplify right side
    79,218x = 14,468,481,225
  5. Step 5: Solve for x
    x = 14,468,481,225/79,218
  6. Step 6: Final answer
    x = 182,641.33

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.