Home / 143,019.20-197,367.36-79,358.24

Finding the Fourth Proportional to 143,019.20, 197,367.36 and 79,358.24

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Solution

The fourth proportional to 143,019.20, 197,367.36 and 79,358.24 is: 109,514.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,019.20 : 197,367.36 = 79,358.24 : x
  2. Step 2: Convert to fraction form
    143,019.20/197,367.36 = 79,358.24/x
  3. Step 3: Cross multiply
    143,019.20x = 197,367.36 × 79,358.24
  4. Step 4: Simplify right side
    143,019.20x = 15,662,726,323.05
  5. Step 5: Solve for x
    x = 15,662,726,323.05/143,019.20
  6. Step 6: Final answer
    x = 109,514.85

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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.