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Finding the Third Proportional to 66,131,272 and 140,129,552

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Solution

The third proportional to 66,131,272 and 140,129,552 is: 296,928,983.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,131,272 : 140,129,552 = 140,129,552 : x
  2. Step 2: Convert to fraction form
    66,131,272/140,129,552 = 140,129,552/x
  3. Step 3: Cross multiply
    66,131,272x = 140,129,552 × 140,129,552
  4. Step 4: Simplify right side
    66,131,272x = 19,636,291,343,720,704
  5. Step 5: Solve for x
    x = 19,636,291,343,720,704/66,131,272
  6. Step 6: Final answer
    x = 296,928,983.06

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.