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Finding the Third Proportional to 76,434 and 165,991

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Solution

The third proportional to 76,434 and 165,991 is: 360,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,434 : 165,991 = 165,991 : x
  2. Step 2: Convert to fraction form
    76,434/165,991 = 165,991/x
  3. Step 3: Cross multiply
    76,434x = 165,991 × 165,991
  4. Step 4: Simplify right side
    76,434x = 27,553,012,081
  5. Step 5: Solve for x
    x = 27,553,012,081/76,434
  6. Step 6: Final answer
    x = 360,481.10

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.