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Finding the Third Proportional to 87,911,813 and 178,308,010

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Solution

The third proportional to 87,911,813 and 178,308,010 is: 361,654,996.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,911,813 : 178,308,010 = 178,308,010 : x
  2. Step 2: Convert to fraction form
    87,911,813/178,308,010 = 178,308,010/x
  3. Step 3: Cross multiply
    87,911,813x = 178,308,010 × 178,308,010
  4. Step 4: Simplify right side
    87,911,813x = 31,793,746,430,160,100
  5. Step 5: Solve for x
    x = 31,793,746,430,160,100/87,911,813
  6. Step 6: Final answer
    x = 361,654,996.58

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.