Home / 143,760.12-198,390.33-79,231.67

Finding the Fourth Proportional to 143,760.12, 198,390.33 and 79,231.67

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Solution

The fourth proportional to 143,760.12, 198,390.33 and 79,231.67 is: 109,340.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,760.12 : 198,390.33 = 79,231.67 : x
  2. Step 2: Convert to fraction form
    143,760.12/198,390.33 = 79,231.67/x
  3. Step 3: Cross multiply
    143,760.12x = 198,390.33 × 79,231.67
  4. Step 4: Simplify right side
    143,760.12x = 15,718,796,909.76
  5. Step 5: Solve for x
    x = 15,718,796,909.76/143,760.12
  6. Step 6: Final answer
    x = 109,340.46

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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.