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Finding the Fourth Proportional to 216,661.14, 299,006.78 and 121,162.14

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Solution

The fourth proportional to 216,661.14, 299,006.78 and 121,162.14 is: 167,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,661.14 : 299,006.78 = 121,162.14 : x
  2. Step 2: Convert to fraction form
    216,661.14/299,006.78 = 121,162.14/x
  3. Step 3: Cross multiply
    216,661.14x = 299,006.78 × 121,162.14
  4. Step 4: Simplify right side
    216,661.14x = 36,228,300,733.50
  5. Step 5: Solve for x
    x = 36,228,300,733.50/216,661.14
  6. Step 6: Final answer
    x = 167,211.81

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