Home / 139,234.13-192,143.47-75,571.93

Finding the Fourth Proportional to 139,234.13, 192,143.47 and 75,571.93

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Solution

The fourth proportional to 139,234.13, 192,143.47 and 75,571.93 is: 104,289.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,234.13 : 192,143.47 = 75,571.93 : x
  2. Step 2: Convert to fraction form
    139,234.13/192,143.47 = 75,571.93/x
  3. Step 3: Cross multiply
    139,234.13x = 192,143.47 × 75,571.93
  4. Step 4: Simplify right side
    139,234.13x = 14,520,652,247.14
  5. Step 5: Solve for x
    x = 14,520,652,247.14/139,234.13
  6. Step 6: Final answer
    x = 104,289.46

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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.