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Finding the Third Proportional to 81,961,940 and 124,621,199

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Solution

The third proportional to 81,961,940 and 124,621,199 is: 189,483,597.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,961,940 : 124,621,199 = 124,621,199 : x
  2. Step 2: Convert to fraction form
    81,961,940/124,621,199 = 124,621,199/x
  3. Step 3: Cross multiply
    81,961,940x = 124,621,199 × 124,621,199
  4. Step 4: Simplify right side
    81,961,940x = 15,530,443,240,197,600
  5. Step 5: Solve for x
    x = 15,530,443,240,197,600/81,961,940
  6. Step 6: Final answer
    x = 189,483,597.39

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.