Home / 143,579.28-198,145.92-79,921.14

Finding the Fourth Proportional to 143,579.28, 198,145.92 and 79,921.14

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Solution

The fourth proportional to 143,579.28, 198,145.92 and 79,921.14 is: 110,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,579.28 : 198,145.92 = 79,921.14 : x
  2. Step 2: Convert to fraction form
    143,579.28/198,145.92 = 79,921.14/x
  3. Step 3: Cross multiply
    143,579.28x = 198,145.92 × 79,921.14
  4. Step 4: Simplify right side
    143,579.28x = 15,836,047,812.75
  5. Step 5: Solve for x
    x = 15,836,047,812.75/143,579.28
  6. Step 6: Final answer
    x = 110,294.80

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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.