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Finding the Third Proportional to 71,969,630 and 156,717,820

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Solution

The third proportional to 71,969,630 and 156,717,820 is: 341,261,655.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,969,630 : 156,717,820 = 156,717,820 : x
  2. Step 2: Convert to fraction form
    71,969,630/156,717,820 = 156,717,820/x
  3. Step 3: Cross multiply
    71,969,630x = 156,717,820 × 156,717,820
  4. Step 4: Simplify right side
    71,969,630x = 24,560,475,105,552,400
  5. Step 5: Solve for x
    x = 24,560,475,105,552,400/71,969,630
  6. Step 6: Final answer
    x = 341,261,655.86

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.