Home / 139,546.93-192,568.95-79,121.66

Finding the Fourth Proportional to 139,546.93, 192,568.95 and 79,121.66

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Solution

The fourth proportional to 139,546.93, 192,568.95 and 79,121.66 is: 109,184.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,546.93 : 192,568.95 = 79,121.66 : x
  2. Step 2: Convert to fraction form
    139,546.93/192,568.95 = 79,121.66/x
  3. Step 3: Cross multiply
    139,546.93x = 192,568.95 × 79,121.66
  4. Step 4: Simplify right side
    139,546.93x = 15,236,375,108.81
  5. Step 5: Solve for x
    x = 15,236,375,108.81/139,546.93
  6. Step 6: Final answer
    x = 109,184.60

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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.