Home / 143,621.88-198,204-83,191.56

Finding the Fourth Proportional to 143,621.88, 198,204 and 83,191.56

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Solution

The fourth proportional to 143,621.88, 198,204 and 83,191.56 is: 114,807.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,621.88 : 198,204 = 83,191.56 : x
  2. Step 2: Convert to fraction form
    143,621.88/198,204 = 83,191.56/x
  3. Step 3: Cross multiply
    143,621.88x = 198,204 × 83,191.56
  4. Step 4: Simplify right side
    143,621.88x = 16,488,899,958.24
  5. Step 5: Solve for x
    x = 16,488,899,958.24/143,621.88
  6. Step 6: Final answer
    x = 114,807.72

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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.