Home / 139,233.76-192,143.24-75,571.56

Finding the Fourth Proportional to 139,233.76, 192,143.24 and 75,571.56

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Solution

The fourth proportional to 139,233.76, 192,143.24 and 75,571.56 is: 104,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,233.76 : 192,143.24 = 75,571.56 : x
  2. Step 2: Convert to fraction form
    139,233.76/192,143.24 = 75,571.56/x
  3. Step 3: Cross multiply
    139,233.76x = 192,143.24 × 75,571.56
  4. Step 4: Simplify right side
    139,233.76x = 14,520,564,390.25
  5. Step 5: Solve for x
    x = 14,520,564,390.25/139,233.76
  6. Step 6: Final answer
    x = 104,289.11

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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.