Home / 139,846.10-192,987.26-76,183.74

Finding the Fourth Proportional to 139,846.10, 192,987.26 and 76,183.74

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Solution

The fourth proportional to 139,846.10, 192,987.26 and 76,183.74 is: 105,133.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,846.10 : 192,987.26 = 76,183.74 : x
  2. Step 2: Convert to fraction form
    139,846.10/192,987.26 = 76,183.74/x
  3. Step 3: Cross multiply
    139,846.10x = 192,987.26 × 76,183.74
  4. Step 4: Simplify right side
    139,846.10x = 14,702,491,143.92
  5. Step 5: Solve for x
    x = 14,702,491,143.92/139,846.10
  6. Step 6: Final answer
    x = 105,133.37

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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.