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Finding the Third Proportional to 85,264 and 129,072

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Solution

The third proportional to 85,264 and 129,072 is: 195,388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,264 : 129,072 = 129,072 : x
  2. Step 2: Convert to fraction form
    85,264/129,072 = 129,072/x
  3. Step 3: Cross multiply
    85,264x = 129,072 × 129,072
  4. Step 4: Simplify right side
    85,264x = 16,659,581,184
  5. Step 5: Solve for x
    x = 16,659,581,184/85,264
  6. Step 6: Final answer
    x = 195,388.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.