Home / 138,724,620.97-191,439,910.37-82,970,040.42

Finding the Fourth Proportional to 138,724,620.97, 191,439,910.37 and 82,970,040.42

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Solution

The fourth proportional to 138,724,620.97, 191,439,910.37 and 82,970,040.42 is: 114,498,615.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724,620.97 : 191,439,910.37 = 82,970,040.42 : x
  2. Step 2: Convert to fraction form
    138,724,620.97/191,439,910.37 = 82,970,040.42/x
  3. Step 3: Cross multiply
    138,724,620.97x = 191,439,910.37 × 82,970,040.42
  4. Step 4: Simplify right side
    138,724,620.97x = 15,883,777,100,028,030
  5. Step 5: Solve for x
    x = 15,883,777,100,028,030/138,724,620.97
  6. Step 6: Final answer
    x = 114,498,615.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.