Home / 142,034.91-196,008.03-78,372.72

Finding the Fourth Proportional to 142,034.91, 196,008.03 and 78,372.72

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Solution

The fourth proportional to 142,034.91, 196,008.03 and 78,372.72 is: 108,154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,034.91 : 196,008.03 = 78,372.72 : x
  2. Step 2: Convert to fraction form
    142,034.91/196,008.03 = 78,372.72/x
  3. Step 3: Cross multiply
    142,034.91x = 196,008.03 × 78,372.72
  4. Step 4: Simplify right side
    142,034.91x = 15,361,682,452.94
  5. Step 5: Solve for x
    x = 15,361,682,452.94/142,034.91
  6. Step 6: Final answer
    x = 108,154.27

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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.