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Finding the Third Proportional to 76,155 and 165,021

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Solution

The third proportional to 76,155 and 165,021 is: 357,585.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,155 : 165,021 = 165,021 : x
  2. Step 2: Convert to fraction form
    76,155/165,021 = 165,021/x
  3. Step 3: Cross multiply
    76,155x = 165,021 × 165,021
  4. Step 4: Simplify right side
    76,155x = 27,231,930,441
  5. Step 5: Solve for x
    x = 27,231,930,441/76,155
  6. Step 6: Final answer
    x = 357,585.59

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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.