Home / 143,278.64-197,715.84-79,614.28

Finding the Fourth Proportional to 143,278.64, 197,715.84 and 79,614.28

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Solution

The fourth proportional to 143,278.64, 197,715.84 and 79,614.28 is: 109,862.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,278.64 : 197,715.84 = 79,614.28 : x
  2. Step 2: Convert to fraction form
    143,278.64/197,715.84 = 79,614.28/x
  3. Step 3: Cross multiply
    143,278.64x = 197,715.84 × 79,614.28
  4. Step 4: Simplify right side
    143,278.64x = 15,741,004,246.20
  5. Step 5: Solve for x
    x = 15,741,004,246.20/143,278.64
  6. Step 6: Final answer
    x = 109,862.88

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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.