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Finding the Fourth Proportional to 129,435.53, 178,669.77 and 75,737.84

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Solution

The fourth proportional to 129,435.53, 178,669.77 and 75,737.84 is: 104,546.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,435.53 : 178,669.77 = 75,737.84 : x
  2. Step 2: Convert to fraction form
    129,435.53/178,669.77 = 75,737.84/x
  3. Step 3: Cross multiply
    129,435.53x = 178,669.77 × 75,737.84
  4. Step 4: Simplify right side
    129,435.53x = 13,532,061,559.75
  5. Step 5: Solve for x
    x = 13,532,061,559.75/129,435.53
  6. Step 6: Final answer
    x = 104,546.74

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