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Finding the Third Proportional to 109,170 and 165,724

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Solution

The third proportional to 109,170 and 165,724 is: 251,575.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,170 : 165,724 = 165,724 : x
  2. Step 2: Convert to fraction form
    109,170/165,724 = 165,724/x
  3. Step 3: Cross multiply
    109,170x = 165,724 × 165,724
  4. Step 4: Simplify right side
    109,170x = 27,464,444,176
  5. Step 5: Solve for x
    x = 27,464,444,176/109,170
  6. Step 6: Final answer
    x = 251,575.01

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.