Home / 135,448.31-186,920.60-78,086.54

Finding the Fourth Proportional to 135,448.31, 186,920.60 and 78,086.54

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Solution

The fourth proportional to 135,448.31, 186,920.60 and 78,086.54 is: 107,760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,448.31 : 186,920.60 = 78,086.54 : x
  2. Step 2: Convert to fraction form
    135,448.31/186,920.60 = 78,086.54/x
  3. Step 3: Cross multiply
    135,448.31x = 186,920.60 × 78,086.54
  4. Step 4: Simplify right side
    135,448.31x = 14,595,981,583.69
  5. Step 5: Solve for x
    x = 14,595,981,583.69/135,448.31
  6. Step 6: Final answer
    x = 107,760.53

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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.