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Finding the Third Proportional to 120,167 and 186,811

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Solution

The third proportional to 120,167 and 186,811 is: 290,415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,167 : 186,811 = 186,811 : x
  2. Step 2: Convert to fraction form
    120,167/186,811 = 186,811/x
  3. Step 3: Cross multiply
    120,167x = 186,811 × 186,811
  4. Step 4: Simplify right side
    120,167x = 34,898,349,721
  5. Step 5: Solve for x
    x = 34,898,349,721/120,167
  6. Step 6: Final answer
    x = 290,415.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.