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Finding the Fourth Proportional to 143,568.05, 198,125.80 and 79,044.80

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Solution

The fourth proportional to 143,568.05, 198,125.80 and 79,044.80 is: 109,082.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,568.05 : 198,125.80 = 79,044.80 : x
  2. Step 2: Convert to fraction form
    143,568.05/198,125.80 = 79,044.80/x
  3. Step 3: Cross multiply
    143,568.05x = 198,125.80 × 79,044.80
  4. Step 4: Simplify right side
    143,568.05x = 15,660,813,047.60
  5. Step 5: Solve for x
    x = 15,660,813,047.60/143,568.05
  6. Step 6: Final answer
    x = 109,082.86

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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.