Home / 139,565.43-192,556.85-79,131.33

Finding the Fourth Proportional to 139,565.43, 192,556.85 and 79,131.33

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Solution

The fourth proportional to 139,565.43, 192,556.85 and 79,131.33 is: 109,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,565.43 : 192,556.85 = 79,131.33 : x
  2. Step 2: Convert to fraction form
    139,565.43/192,556.85 = 79,131.33/x
  3. Step 3: Cross multiply
    139,565.43x = 192,556.85 × 79,131.33
  4. Step 4: Simplify right side
    139,565.43x = 15,237,279,245.45
  5. Step 5: Solve for x
    x = 15,237,279,245.45/139,565.43
  6. Step 6: Final answer
    x = 109,176.60

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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.