Home / 139,234.05-192,143.18-75,571.87

Finding the Fourth Proportional to 139,234.05, 192,143.18 and 75,571.87

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Solution

The fourth proportional to 139,234.05, 192,143.18 and 75,571.87 is: 104,289.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,234.05 : 192,143.18 = 75,571.87 : x
  2. Step 2: Convert to fraction form
    139,234.05/192,143.18 = 75,571.87/x
  3. Step 3: Cross multiply
    139,234.05x = 192,143.18 × 75,571.87
  4. Step 4: Simplify right side
    139,234.05x = 14,520,619,420.35
  5. Step 5: Solve for x
    x = 14,520,619,420.35/139,234.05
  6. Step 6: Final answer
    x = 104,289.28

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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.