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Finding the Third Proportional to 108,981 and 166,639

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Solution

The third proportional to 108,981 and 166,639 is: 254,801.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,981 : 166,639 = 166,639 : x
  2. Step 2: Convert to fraction form
    108,981/166,639 = 166,639/x
  3. Step 3: Cross multiply
    108,981x = 166,639 × 166,639
  4. Step 4: Simplify right side
    108,981x = 27,768,556,321
  5. Step 5: Solve for x
    x = 27,768,556,321/108,981
  6. Step 6: Final answer
    x = 254,801.81

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.