Home / 106,121.16-159,126.96-31,231.56

Finding the Fourth Proportional to 106,121.16, 159,126.96 and 31,231.56

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Solution

The fourth proportional to 106,121.16, 159,126.96 and 31,231.56 is: 46,831.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,121.16 : 159,126.96 = 31,231.56 : x
  2. Step 2: Convert to fraction form
    106,121.16/159,126.96 = 31,231.56/x
  3. Step 3: Cross multiply
    106,121.16x = 159,126.96 × 31,231.56
  4. Step 4: Simplify right side
    106,121.16x = 4,969,783,198.86
  5. Step 5: Solve for x
    x = 4,969,783,198.86/106,121.16
  6. Step 6: Final answer
    x = 46,831.22

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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.