Home / 143,198.98-197,609.10-79,540.84

Finding the Fourth Proportional to 143,198.98, 197,609.10 and 79,540.84

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Solution

The fourth proportional to 143,198.98, 197,609.10 and 79,540.84 is: 109,763.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,198.98 : 197,609.10 = 79,540.84 : x
  2. Step 2: Convert to fraction form
    143,198.98/197,609.10 = 79,540.84/x
  3. Step 3: Cross multiply
    143,198.98x = 197,609.10 × 79,540.84
  4. Step 4: Simplify right side
    143,198.98x = 15,717,993,805.64
  5. Step 5: Solve for x
    x = 15,717,993,805.64/143,198.98
  6. Step 6: Final answer
    x = 109,763.31

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1.5x scale

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.