Home / 212,786.54-319,190.76-55,016.36

Finding the Fourth Proportional to 212,786.54, 319,190.76 and 55,016.36

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Solution

The fourth proportional to 212,786.54, 319,190.76 and 55,016.36 is: 82,527.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,786.54 : 319,190.76 = 55,016.36 : x
  2. Step 2: Convert to fraction form
    212,786.54/319,190.76 = 55,016.36/x
  3. Step 3: Cross multiply
    212,786.54x = 319,190.76 × 55,016.36
  4. Step 4: Simplify right side
    212,786.54x = 17,560,713,760.83
  5. Step 5: Solve for x
    x = 17,560,713,760.83/212,786.54
  6. Step 6: Final answer
    x = 82,527.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.