Home / 139,546.66-192,568.57-79,121.38

Finding the Fourth Proportional to 139,546.66, 192,568.57 and 79,121.38

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Solution

The fourth proportional to 139,546.66, 192,568.57 and 79,121.38 is: 109,184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,546.66 : 192,568.57 = 79,121.38 : x
  2. Step 2: Convert to fraction form
    139,546.66/192,568.57 = 79,121.38/x
  3. Step 3: Cross multiply
    139,546.66x = 192,568.57 × 79,121.38
  4. Step 4: Simplify right side
    139,546.66x = 15,236,291,484.45
  5. Step 5: Solve for x
    x = 15,236,291,484.45/139,546.66
  6. Step 6: Final answer
    x = 109,184.21

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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.