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Finding the Third Proportional to 85,911.38 and 131,085.75

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Solution

The third proportional to 85,911.38 and 131,085.75 is: 200,013.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,911.38 : 131,085.75 = 131,085.75 : x
  2. Step 2: Convert to fraction form
    85,911.38/131,085.75 = 131,085.75/x
  3. Step 3: Cross multiply
    85,911.38x = 131,085.75 × 131,085.75
  4. Step 4: Simplify right side
    85,911.38x = 17,183,473,853.06
  5. Step 5: Solve for x
    x = 17,183,473,853.06/85,911.38
  6. Step 6: Final answer
    x = 200,013.95

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.