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Finding the Third Proportional to 75,900 and 165,900

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Solution

The third proportional to 75,900 and 165,900 is: 362,619.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,900 : 165,900 = 165,900 : x
  2. Step 2: Convert to fraction form
    75,900/165,900 = 165,900/x
  3. Step 3: Cross multiply
    75,900x = 165,900 × 165,900
  4. Step 4: Simplify right side
    75,900x = 27,522,810,000
  5. Step 5: Solve for x
    x = 27,522,810,000/75,900
  6. Step 6: Final answer
    x = 362,619.37

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.