Home / 133,286.58-199,831.10-80,683.62

Finding the Fourth Proportional to 133,286.58, 199,831.10 and 80,683.62

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Solution

The fourth proportional to 133,286.58, 199,831.10 and 80,683.62 is: 120,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,286.58 : 199,831.10 = 80,683.62 : x
  2. Step 2: Convert to fraction form
    133,286.58/199,831.10 = 80,683.62/x
  3. Step 3: Cross multiply
    133,286.58x = 199,831.10 × 80,683.62
  4. Step 4: Simplify right side
    133,286.58x = 16,123,096,536.58
  5. Step 5: Solve for x
    x = 16,123,096,536.58/133,286.58
  6. Step 6: Final answer
    x = 120,965.64

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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.