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Finding the Third Proportional to 79,866 and 128,668.50

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Solution

The third proportional to 79,866 and 128,668.50 is: 207,292.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,866 : 128,668.50 = 128,668.50 : x
  2. Step 2: Convert to fraction form
    79,866/128,668.50 = 128,668.50/x
  3. Step 3: Cross multiply
    79,866x = 128,668.50 × 128,668.50
  4. Step 4: Simplify right side
    79,866x = 16,555,582,892.25
  5. Step 5: Solve for x
    x = 16,555,582,892.25/79,866
  6. Step 6: Final answer
    x = 207,292.00

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.