Home / 139,550.69-192,596.19-78,313.75

Finding the Fourth Proportional to 139,550.69, 192,596.19 and 78,313.75

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Solution

The fourth proportional to 139,550.69, 192,596.19 and 78,313.75 is: 108,082.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,550.69 : 192,596.19 = 78,313.75 : x
  2. Step 2: Convert to fraction form
    139,550.69/192,596.19 = 78,313.75/x
  3. Step 3: Cross multiply
    139,550.69x = 192,596.19 × 78,313.75
  4. Step 4: Simplify right side
    139,550.69x = 15,082,929,874.61
  5. Step 5: Solve for x
    x = 15,082,929,874.61/139,550.69
  6. Step 6: Final answer
    x = 108,082.09

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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.