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Finding the Third Proportional to 84,215,556 and 126,945,432

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Solution

The third proportional to 84,215,556 and 126,945,432 is: 191,355,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,215,556 : 126,945,432 = 126,945,432 : x
  2. Step 2: Convert to fraction form
    84,215,556/126,945,432 = 126,945,432/x
  3. Step 3: Cross multiply
    84,215,556x = 126,945,432 × 126,945,432
  4. Step 4: Simplify right side
    84,215,556x = 16,115,142,705,666,624
  5. Step 5: Solve for x
    x = 16,115,142,705,666,624/84,215,556
  6. Step 6: Final answer
    x = 191,355,890.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.