Home / 143,227.26-197,654.97-78,697.85

Finding the Fourth Proportional to 143,227.26, 197,654.97 and 78,697.85

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Solution

The fourth proportional to 143,227.26, 197,654.97 and 78,697.85 is: 108,603.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,227.26 : 197,654.97 = 78,697.85 : x
  2. Step 2: Convert to fraction form
    143,227.26/197,654.97 = 78,697.85/x
  3. Step 3: Cross multiply
    143,227.26x = 197,654.97 × 78,697.85
  4. Step 4: Simplify right side
    143,227.26x = 15,555,020,192.54
  5. Step 5: Solve for x
    x = 15,555,020,192.54/143,227.26
  6. Step 6: Final answer
    x = 108,603.77

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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.