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Finding the Third Proportional to 117,639,789 and 177,972,687

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Solution

The third proportional to 117,639,789 and 177,972,687 is: 269,247,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,639,789 : 177,972,687 = 177,972,687 : x
  2. Step 2: Convert to fraction form
    117,639,789/177,972,687 = 177,972,687/x
  3. Step 3: Cross multiply
    117,639,789x = 177,972,687 × 177,972,687
  4. Step 4: Simplify right side
    117,639,789x = 31,674,277,317,999,968
  5. Step 5: Solve for x
    x = 31,674,277,317,999,968/117,639,789
  6. Step 6: Final answer
    x = 269,247,994.98

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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.