Home / 143,584.28-198,138.54-79,040.94

Finding the Fourth Proportional to 143,584.28, 198,138.54 and 79,040.94

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Solution

The fourth proportional to 143,584.28, 198,138.54 and 79,040.94 is: 109,072.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,584.28 : 198,138.54 = 79,040.94 : x
  2. Step 2: Convert to fraction form
    143,584.28/198,138.54 = 79,040.94/x
  3. Step 3: Cross multiply
    143,584.28x = 198,138.54 × 79,040.94
  4. Step 4: Simplify right side
    143,584.28x = 15,661,056,451.83
  5. Step 5: Solve for x
    x = 15,661,056,451.83/143,584.28
  6. Step 6: Final answer
    x = 109,072.22

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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.