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Finding the Third Proportional to 90,451.69 and 198,946.13

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Solution

The third proportional to 90,451.69 and 198,946.13 is: 437,576.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,451.69 : 198,946.13 = 198,946.13 : x
  2. Step 2: Convert to fraction form
    90,451.69/198,946.13 = 198,946.13/x
  3. Step 3: Cross multiply
    90,451.69x = 198,946.13 × 198,946.13
  4. Step 4: Simplify right side
    90,451.69x = 39,579,560,652.52
  5. Step 5: Solve for x
    x = 39,579,560,652.52/90,451.69
  6. Step 6: Final answer
    x = 437,576.81

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.