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Finding the Third Proportional to 79,806,721.50 and 171,920,238.75

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Solution

The third proportional to 79,806,721.50 and 171,920,238.75 is: 370,351,869.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,806,721.50 : 171,920,238.75 = 171,920,238.75 : x
  2. Step 2: Convert to fraction form
    79,806,721.50/171,920,238.75 = 171,920,238.75/x
  3. Step 3: Cross multiply
    79,806,721.50x = 171,920,238.75 × 171,920,238.75
  4. Step 4: Simplify right side
    79,806,721.50x = 29,556,568,491,857,000
  5. Step 5: Solve for x
    x = 29,556,568,491,857,000/79,806,721.50
  6. Step 6: Final answer
    x = 370,351,869.32

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.