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Finding the Third Proportional to 90,870,686 and 140,973,100

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Solution

The third proportional to 90,870,686 and 140,973,100 is: 218,699,954.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,870,686 : 140,973,100 = 140,973,100 : x
  2. Step 2: Convert to fraction form
    90,870,686/140,973,100 = 140,973,100/x
  3. Step 3: Cross multiply
    90,870,686x = 140,973,100 × 140,973,100
  4. Step 4: Simplify right side
    90,870,686x = 19,873,414,923,610,000
  5. Step 5: Solve for x
    x = 19,873,414,923,610,000/90,870,686
  6. Step 6: Final answer
    x = 218,699,954.83

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.