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Finding the Third Proportional to 87,779 and 131,476

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Solution

The third proportional to 87,779 and 131,476 is: 196,925.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779 : 131,476 = 131,476 : x
  2. Step 2: Convert to fraction form
    87,779/131,476 = 131,476/x
  3. Step 3: Cross multiply
    87,779x = 131,476 × 131,476
  4. Step 4: Simplify right side
    87,779x = 17,285,938,576
  5. Step 5: Solve for x
    x = 17,285,938,576/87,779
  6. Step 6: Final answer
    x = 196,925.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.