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Finding the Third Proportional to 87,668,816 and 139,621,336

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Solution

The third proportional to 87,668,816 and 139,621,336 is: 222,360,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668,816 : 139,621,336 = 139,621,336 : x
  2. Step 2: Convert to fraction form
    87,668,816/139,621,336 = 139,621,336/x
  3. Step 3: Cross multiply
    87,668,816x = 139,621,336 × 139,621,336
  4. Step 4: Simplify right side
    87,668,816x = 19,494,117,466,424,896
  5. Step 5: Solve for x
    x = 19,494,117,466,424,896/87,668,816
  6. Step 6: Final answer
    x = 222,360,907.29

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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.