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Finding the Third Proportional to 87,297,558 and 121,380,270

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Solution

The third proportional to 87,297,558 and 121,380,270 is: 168,769,554.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,297,558 : 121,380,270 = 121,380,270 : x
  2. Step 2: Convert to fraction form
    87,297,558/121,380,270 = 121,380,270/x
  3. Step 3: Cross multiply
    87,297,558x = 121,380,270 × 121,380,270
  4. Step 4: Simplify right side
    87,297,558x = 14,733,169,945,272,900
  5. Step 5: Solve for x
    x = 14,733,169,945,272,900/87,297,558
  6. Step 6: Final answer
    x = 168,769,554.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.