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Finding the Third Proportional to 73,131 and 109,218

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Solution

The third proportional to 73,131 and 109,218 is: 163,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,131 : 109,218 = 109,218 : x
  2. Step 2: Convert to fraction form
    73,131/109,218 = 109,218/x
  3. Step 3: Cross multiply
    73,131x = 109,218 × 109,218
  4. Step 4: Simplify right side
    73,131x = 11,928,571,524
  5. Step 5: Solve for x
    x = 11,928,571,524/73,131
  6. Step 6: Final answer
    x = 163,112.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.