Home / 139,440.40-192,427.21-79,022.56

Finding the Fourth Proportional to 139,440.40, 192,427.21 and 79,022.56

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Solution

The fourth proportional to 139,440.40, 192,427.21 and 79,022.56 is: 109,050.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,440.40 : 192,427.21 = 79,022.56 : x
  2. Step 2: Convert to fraction form
    139,440.40/192,427.21 = 79,022.56/x
  3. Step 3: Cross multiply
    139,440.40x = 192,427.21 × 79,022.56
  4. Step 4: Simplify right side
    139,440.40x = 15,206,090,747.86
  5. Step 5: Solve for x
    x = 15,206,090,747.86/139,440.40
  6. Step 6: Final answer
    x = 109,050.83

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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.