Home / 143,329.88-197,796.23-78,800.21

Finding the Fourth Proportional to 143,329.88, 197,796.23 and 78,800.21

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Solution

The fourth proportional to 143,329.88, 197,796.23 and 78,800.21 is: 108,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,329.88 : 197,796.23 = 78,800.21 : x
  2. Step 2: Convert to fraction form
    143,329.88/197,796.23 = 78,800.21/x
  3. Step 3: Cross multiply
    143,329.88x = 197,796.23 × 78,800.21
  4. Step 4: Simplify right side
    143,329.88x = 15,586,383,078.23
  5. Step 5: Solve for x
    x = 15,586,383,078.23/143,329.88
  6. Step 6: Final answer
    x = 108,744.83

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1.5x scale

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.