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Finding the Third Proportional to 76,630 and 102,272

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Solution

The third proportional to 76,630 and 102,272 is: 136,494.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,630 : 102,272 = 102,272 : x
  2. Step 2: Convert to fraction form
    76,630/102,272 = 102,272/x
  3. Step 3: Cross multiply
    76,630x = 102,272 × 102,272
  4. Step 4: Simplify right side
    76,630x = 10,459,561,984
  5. Step 5: Solve for x
    x = 10,459,561,984/76,630
  6. Step 6: Final answer
    x = 136,494.35

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.