Home / 129,742.20-179,013.70-78,753.68

Finding the Fourth Proportional to 129,742.20, 179,013.70 and 78,753.68

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Solution

The fourth proportional to 129,742.20, 179,013.70 and 78,753.68 is: 108,661.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,742.20 : 179,013.70 = 78,753.68 : x
  2. Step 2: Convert to fraction form
    129,742.20/179,013.70 = 78,753.68/x
  3. Step 3: Cross multiply
    129,742.20x = 179,013.70 × 78,753.68
  4. Step 4: Simplify right side
    129,742.20x = 14,097,986,553.46
  5. Step 5: Solve for x
    x = 14,097,986,553.46/129,742.20
  6. Step 6: Final answer
    x = 108,661.53

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