Home / 217,331.37-299,923.56-121,839.66

Finding the Fourth Proportional to 217,331.37, 299,923.56 and 121,839.66

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Solution

The fourth proportional to 217,331.37, 299,923.56 and 121,839.66 is: 168,142.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,331.37 : 299,923.56 = 121,839.66 : x
  2. Step 2: Convert to fraction form
    217,331.37/299,923.56 = 121,839.66/x
  3. Step 3: Cross multiply
    217,331.37x = 299,923.56 × 121,839.66
  4. Step 4: Simplify right side
    217,331.37x = 36,542,584,576.39
  5. Step 5: Solve for x
    x = 36,542,584,576.39/217,331.37
  6. Step 6: Final answer
    x = 168,142.25

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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.