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Finding the Fourth Proportional to 143,221.22, 214,831.92 and 54,454.22

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Solution

The fourth proportional to 143,221.22, 214,831.92 and 54,454.22 is: 81,681.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,221.22 : 214,831.92 = 54,454.22 : x
  2. Step 2: Convert to fraction form
    143,221.22/214,831.92 = 54,454.22/x
  3. Step 3: Cross multiply
    143,221.22x = 214,831.92 × 54,454.22
  4. Step 4: Simplify right side
    143,221.22x = 11,698,504,634.70
  5. Step 5: Solve for x
    x = 11,698,504,634.70/143,221.22
  6. Step 6: Final answer
    x = 81,681.36

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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.