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Finding the Third Proportional to 132,428 and 170,031

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Solution

The third proportional to 132,428 and 170,031 is: 218,311.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,428 : 170,031 = 170,031 : x
  2. Step 2: Convert to fraction form
    132,428/170,031 = 170,031/x
  3. Step 3: Cross multiply
    132,428x = 170,031 × 170,031
  4. Step 4: Simplify right side
    132,428x = 28,910,540,961
  5. Step 5: Solve for x
    x = 28,910,540,961/132,428
  6. Step 6: Final answer
    x = 218,311.39

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.