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Finding the Third Proportional to 86,021 and 126,492

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Solution

The third proportional to 86,021 and 126,492 is: 186,003.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,021 : 126,492 = 126,492 : x
  2. Step 2: Convert to fraction form
    86,021/126,492 = 126,492/x
  3. Step 3: Cross multiply
    86,021x = 126,492 × 126,492
  4. Step 4: Simplify right side
    86,021x = 16,000,226,064
  5. Step 5: Solve for x
    x = 16,000,226,064/86,021
  6. Step 6: Final answer
    x = 186,003.72

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.