Home / 102,739.92-154,158.72-71,198.52

Finding the Fourth Proportional to 102,739.92, 154,158.72 and 71,198.52

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Solution

The fourth proportional to 102,739.92, 154,158.72 and 71,198.52 is: 106,831.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,739.92 : 154,158.72 = 71,198.52 : x
  2. Step 2: Convert to fraction form
    102,739.92/154,158.72 = 71,198.52/x
  3. Step 3: Cross multiply
    102,739.92x = 154,158.72 × 71,198.52
  4. Step 4: Simplify right side
    102,739.92x = 10,975,872,709.09
  5. Step 5: Solve for x
    x = 10,975,872,709.09/102,739.92
  6. Step 6: Final answer
    x = 106,831.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.