Home / 143,278.18-197,719.94-79,614.34

Finding the Fourth Proportional to 143,278.18, 197,719.94 and 79,614.34

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Solution

The fourth proportional to 143,278.18, 197,719.94 and 79,614.34 is: 109,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,278.18 : 197,719.94 = 79,614.34 : x
  2. Step 2: Convert to fraction form
    143,278.18/197,719.94 = 79,614.34/x
  3. Step 3: Cross multiply
    143,278.18x = 197,719.94 × 79,614.34
  4. Step 4: Simplify right side
    143,278.18x = 15,741,342,527.94
  5. Step 5: Solve for x
    x = 15,741,342,527.94/143,278.18
  6. Step 6: Final answer
    x = 109,865.60

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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.