Home / 143,599.89-198,166.13-79,067.75

Finding the Fourth Proportional to 143,599.89, 198,166.13 and 79,067.75

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Solution

The fourth proportional to 143,599.89, 198,166.13 and 79,067.75 is: 109,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,599.89 : 198,166.13 = 79,067.75 : x
  2. Step 2: Convert to fraction form
    143,599.89/198,166.13 = 79,067.75/x
  3. Step 3: Cross multiply
    143,599.89x = 198,166.13 × 79,067.75
  4. Step 4: Simplify right side
    143,599.89x = 15,668,548,935.64
  5. Step 5: Solve for x
    x = 15,668,548,935.64/143,599.89
  6. Step 6: Final answer
    x = 109,112.54

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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.