Home / 142,195.27-196,229.41-78,532.51

Finding the Fourth Proportional to 142,195.27, 196,229.41 and 78,532.51

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Solution

The fourth proportional to 142,195.27, 196,229.41 and 78,532.51 is: 108,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,195.27 : 196,229.41 = 78,532.51 : x
  2. Step 2: Convert to fraction form
    142,195.27/196,229.41 = 78,532.51/x
  3. Step 3: Cross multiply
    142,195.27x = 196,229.41 × 78,532.51
  4. Step 4: Simplify right side
    142,195.27x = 15,410,388,103.12
  5. Step 5: Solve for x
    x = 15,410,388,103.12/142,195.27
  6. Step 6: Final answer
    x = 108,374.83

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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.