Home / 139,550.20-192,595.50-78,313.24

Finding the Fourth Proportional to 139,550.20, 192,595.50 and 78,313.24

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Solution

The fourth proportional to 139,550.20, 192,595.50 and 78,313.24 is: 108,081.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,550.20 : 192,595.50 = 78,313.24 : x
  2. Step 2: Convert to fraction form
    139,550.20/192,595.50 = 78,313.24/x
  3. Step 3: Cross multiply
    139,550.20x = 192,595.50 × 78,313.24
  4. Step 4: Simplify right side
    139,550.20x = 15,082,777,614.42
  5. Step 5: Solve for x
    x = 15,082,777,614.42/139,550.20
  6. Step 6: Final answer
    x = 108,081.38

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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.