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Finding the Third Proportional to 85,605 and 133,071

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Solution

The third proportional to 85,605 and 133,071 is: 206,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,605 : 133,071 = 133,071 : x
  2. Step 2: Convert to fraction form
    85,605/133,071 = 133,071/x
  3. Step 3: Cross multiply
    85,605x = 133,071 × 133,071
  4. Step 4: Simplify right side
    85,605x = 17,707,891,041
  5. Step 5: Solve for x
    x = 17,707,891,041/85,605
  6. Step 6: Final answer
    x = 206,855.80

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.