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Finding the Third Proportional to 72,279.38 and 111,237.19

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Solution

The third proportional to 72,279.38 and 111,237.19 is: 171,192.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,279.38 : 111,237.19 = 111,237.19 : x
  2. Step 2: Convert to fraction form
    72,279.38/111,237.19 = 111,237.19/x
  3. Step 3: Cross multiply
    72,279.38x = 111,237.19 × 111,237.19
  4. Step 4: Simplify right side
    72,279.38x = 12,373,711,882.91
  5. Step 5: Solve for x
    x = 12,373,711,882.91/72,279.38
  6. Step 6: Final answer
    x = 171,192.85

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.