Home / 143,339.03-197,790.67-78,797.62

Finding the Fourth Proportional to 143,339.03, 197,790.67 and 78,797.62

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Solution

The fourth proportional to 143,339.03, 197,790.67 and 78,797.62 is: 108,731.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,339.03 : 197,790.67 = 78,797.62 : x
  2. Step 2: Convert to fraction form
    143,339.03/197,790.67 = 78,797.62/x
  3. Step 3: Cross multiply
    143,339.03x = 197,790.67 × 78,797.62
  4. Step 4: Simplify right side
    143,339.03x = 15,585,433,660.22
  5. Step 5: Solve for x
    x = 15,585,433,660.22/143,339.03
  6. Step 6: Final answer
    x = 108,731.27

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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.