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Finding the Third Proportional to 87,668,821 and 139,621,344

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Solution

The third proportional to 87,668,821 and 139,621,344 is: 222,360,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668,821 : 139,621,344 = 139,621,344 : x
  2. Step 2: Convert to fraction form
    87,668,821/139,621,344 = 139,621,344/x
  3. Step 3: Cross multiply
    87,668,821x = 139,621,344 × 139,621,344
  4. Step 4: Simplify right side
    87,668,821x = 19,494,119,700,366,336
  5. Step 5: Solve for x
    x = 19,494,119,700,366,336/87,668,821
  6. Step 6: Final answer
    x = 222,360,920.09

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.