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Finding the Third Proportional to 77,609,636 and 129,341,598

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Solution

The third proportional to 77,609,636 and 129,341,598 is: 215,556,338.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,609,636 : 129,341,598 = 129,341,598 : x
  2. Step 2: Convert to fraction form
    77,609,636/129,341,598 = 129,341,598/x
  3. Step 3: Cross multiply
    77,609,636x = 129,341,598 × 129,341,598
  4. Step 4: Simplify right side
    77,609,636x = 16,729,248,973,193,604
  5. Step 5: Solve for x
    x = 16,729,248,973,193,604/77,609,636
  6. Step 6: Final answer
    x = 215,556,338.56

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.