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Finding the Third Proportional to 81,016,690 and 115,770,930

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Solution

The third proportional to 81,016,690 and 115,770,930 is: 165,433,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,016,690 : 115,770,930 = 115,770,930 : x
  2. Step 2: Convert to fraction form
    81,016,690/115,770,930 = 115,770,930/x
  3. Step 3: Cross multiply
    81,016,690x = 115,770,930 × 115,770,930
  4. Step 4: Simplify right side
    81,016,690x = 13,402,908,233,064,900
  5. Step 5: Solve for x
    x = 13,402,908,233,064,900/81,016,690
  6. Step 6: Final answer
    x = 165,433,915.32

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.