Home / 143,957.91-198,660.53-79,427.67

Finding the Fourth Proportional to 143,957.91, 198,660.53 and 79,427.67

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Solution

The fourth proportional to 143,957.91, 198,660.53 and 79,427.67 is: 109,609.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,957.91 : 198,660.53 = 79,427.67 : x
  2. Step 2: Convert to fraction form
    143,957.91/198,660.53 = 79,427.67/x
  3. Step 3: Cross multiply
    143,957.91x = 198,660.53 × 79,427.67
  4. Step 4: Simplify right side
    143,957.91x = 15,779,143,217.43
  5. Step 5: Solve for x
    x = 15,779,143,217.43/143,957.91
  6. Step 6: Final answer
    x = 109,609.42

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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.