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Finding the Third Proportional to 81,840.38 and 126,136.13

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Solution

The third proportional to 81,840.38 and 126,136.13 is: 194,406.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,840.38 : 126,136.13 = 126,136.13 : x
  2. Step 2: Convert to fraction form
    81,840.38/126,136.13 = 126,136.13/x
  3. Step 3: Cross multiply
    81,840.38x = 126,136.13 × 126,136.13
  4. Step 4: Simplify right side
    81,840.38x = 15,910,322,030.02
  5. Step 5: Solve for x
    x = 15,910,322,030.02/81,840.38
  6. Step 6: Final answer
    x = 194,406.76

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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.