Home / 143,760.76-198,391.19-79,232.36

Finding the Fourth Proportional to 143,760.76, 198,391.19 and 79,232.36

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Solution

The fourth proportional to 143,760.76, 198,391.19 and 79,232.36 is: 109,341.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,760.76 : 198,391.19 = 79,232.36 : x
  2. Step 2: Convert to fraction form
    143,760.76/198,391.19 = 79,232.36/x
  3. Step 3: Cross multiply
    143,760.76x = 198,391.19 × 79,232.36
  4. Step 4: Simplify right side
    143,760.76x = 15,719,000,798.79
  5. Step 5: Solve for x
    x = 15,719,000,798.79/143,760.76
  6. Step 6: Final answer
    x = 109,341.39

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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.