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Finding the Fourth Proportional to 143,626.98, 198,208.71 and 79,969.08

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Solution

The fourth proportional to 143,626.98, 198,208.71 and 79,969.08 is: 110,359.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,626.98 : 198,208.71 = 79,969.08 : x
  2. Step 2: Convert to fraction form
    143,626.98/198,208.71 = 79,969.08/x
  3. Step 3: Cross multiply
    143,626.98x = 198,208.71 × 79,969.08
  4. Step 4: Simplify right side
    143,626.98x = 15,850,568,186.69
  5. Step 5: Solve for x
    x = 15,850,568,186.69/143,626.98
  6. Step 6: Final answer
    x = 110,359.27

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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.