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Finding the Third Proportional to 87,668,818 and 139,621,339

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Solution

The third proportional to 87,668,818 and 139,621,339 is: 222,360,911.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668,818 : 139,621,339 = 139,621,339 : x
  2. Step 2: Convert to fraction form
    87,668,818/139,621,339 = 139,621,339/x
  3. Step 3: Cross multiply
    87,668,818x = 139,621,339 × 139,621,339
  4. Step 4: Simplify right side
    87,668,818x = 19,494,118,304,152,920
  5. Step 5: Solve for x
    x = 19,494,118,304,152,920/87,668,818
  6. Step 6: Final answer
    x = 222,360,911.77

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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.