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Finding the Third Proportional to 76,890 and 166,413

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Solution

The third proportional to 76,890 and 166,413 is: 360,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890 : 166,413 = 166,413 : x
  2. Step 2: Convert to fraction form
    76,890/166,413 = 166,413/x
  3. Step 3: Cross multiply
    76,890x = 166,413 × 166,413
  4. Step 4: Simplify right side
    76,890x = 27,693,286,569
  5. Step 5: Solve for x
    x = 27,693,286,569/76,890
  6. Step 6: Final answer
    x = 360,167.60

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.