Home / 179,942.40-269,740.80-139,939.20

Finding the Fourth Proportional to 179,942.40, 269,740.80 and 139,939.20

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Solution

The fourth proportional to 179,942.40, 269,740.80 and 139,939.20 is: 209,774.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,942.40 : 269,740.80 = 139,939.20 : x
  2. Step 2: Convert to fraction form
    179,942.40/269,740.80 = 139,939.20/x
  3. Step 3: Cross multiply
    179,942.40x = 269,740.80 × 139,939.20
  4. Step 4: Simplify right side
    179,942.40x = 37,747,311,759.36
  5. Step 5: Solve for x
    x = 37,747,311,759.36/179,942.40
  6. Step 6: Final answer
    x = 209,774.42

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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.