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Finding the Fourth Proportional to 129,887.81, 179,368.98 and 122,811.55

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Solution

The fourth proportional to 129,887.81, 179,368.98 and 122,811.55 is: 169,596.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,887.81 : 179,368.98 = 122,811.55 : x
  2. Step 2: Convert to fraction form
    129,887.81/179,368.98 = 122,811.55/x
  3. Step 3: Cross multiply
    129,887.81x = 179,368.98 × 122,811.55
  4. Step 4: Simplify right side
    129,887.81x = 22,028,581,546.75
  5. Step 5: Solve for x
    x = 22,028,581,546.75/129,887.81
  6. Step 6: Final answer
    x = 169,596.98

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