Home / 138,724,667.69-191,439,974.78-82,970,087.13

Finding the Fourth Proportional to 138,724,667.69, 191,439,974.78 and 82,970,087.13

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Solution

The fourth proportional to 138,724,667.69, 191,439,974.78 and 82,970,087.13 is: 114,498,680.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724,667.69 : 191,439,974.78 = 82,970,087.13 : x
  2. Step 2: Convert to fraction form
    138,724,667.69/191,439,974.78 = 82,970,087.13/x
  3. Step 3: Cross multiply
    138,724,667.69x = 191,439,974.78 × 82,970,087.13
  4. Step 4: Simplify right side
    138,724,667.69x = 15,883,791,387,557,890
  5. Step 5: Solve for x
    x = 15,883,791,387,557,890/138,724,667.69
  6. Step 6: Final answer
    x = 114,498,680.39

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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.