Home / 143,968.20-198,674.76-79,438.02

Finding the Fourth Proportional to 143,968.20, 198,674.76 and 79,438.02

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Solution

The fourth proportional to 143,968.20, 198,674.76 and 79,438.02 is: 109,623.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,968.20 : 198,674.76 = 79,438.02 : x
  2. Step 2: Convert to fraction form
    143,968.20/198,674.76 = 79,438.02/x
  3. Step 3: Cross multiply
    143,968.20x = 198,674.76 × 79,438.02
  4. Step 4: Simplify right side
    143,968.20x = 15,782,329,558.38
  5. Step 5: Solve for x
    x = 15,782,329,558.38/143,968.20
  6. Step 6: Final answer
    x = 109,623.72

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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.