Home / 111,221.18-166,831.77-28,115.18

Finding the Fourth Proportional to 111,221.18, 166,831.77 and 28,115.18

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Solution

The fourth proportional to 111,221.18, 166,831.77 and 28,115.18 is: 42,172.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,221.18 : 166,831.77 = 28,115.18 : x
  2. Step 2: Convert to fraction form
    111,221.18/166,831.77 = 28,115.18/x
  3. Step 3: Cross multiply
    111,221.18x = 166,831.77 × 28,115.18
  4. Step 4: Simplify right side
    111,221.18x = 4,690,505,243.27
  5. Step 5: Solve for x
    x = 4,690,505,243.27/111,221.18
  6. Step 6: Final answer
    x = 42,172.77

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1.5x scale

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.