Home / 198,123.21-273,338.28-130,176.78

Finding the Fourth Proportional to 198,123.21, 273,338.28 and 130,176.78

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Solution

The fourth proportional to 198,123.21, 273,338.28 and 130,176.78 is: 179,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,123.21 : 273,338.28 = 130,176.78 : x
  2. Step 2: Convert to fraction form
    198,123.21/273,338.28 = 130,176.78/x
  3. Step 3: Cross multiply
    198,123.21x = 273,338.28 × 130,176.78
  4. Step 4: Simplify right side
    198,123.21x = 35,582,297,141.14
  5. Step 5: Solve for x
    x = 35,582,297,141.14/198,123.21
  6. Step 6: Final answer
    x = 179,596.81

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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.