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Finding the Third Proportional to 81,022.50 and 126,811.50

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Solution

The third proportional to 81,022.50 and 126,811.50 is: 198,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,022.50 : 126,811.50 = 126,811.50 : x
  2. Step 2: Convert to fraction form
    81,022.50/126,811.50 = 126,811.50/x
  3. Step 3: Cross multiply
    81,022.50x = 126,811.50 × 126,811.50
  4. Step 4: Simplify right side
    81,022.50x = 16,081,156,532.25
  5. Step 5: Solve for x
    x = 16,081,156,532.25/81,022.50
  6. Step 6: Final answer
    x = 198,477.66

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.