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Finding the Fourth Proportional to 120,402.56, 166,267.22 and 90,135.33

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Solution

The fourth proportional to 120,402.56, 166,267.22 and 90,135.33 is: 124,470.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,402.56 : 166,267.22 = 90,135.33 : x
  2. Step 2: Convert to fraction form
    120,402.56/166,267.22 = 90,135.33/x
  3. Step 3: Cross multiply
    120,402.56x = 166,267.22 × 90,135.33
  4. Step 4: Simplify right side
    120,402.56x = 14,986,550,742.88
  5. Step 5: Solve for x
    x = 14,986,550,742.88/120,402.56
  6. Step 6: Final answer
    x = 124,470.37

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