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Finding the Fourth Proportional to 217,135.50, 299,646.99 and 121,642.17

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Solution

The fourth proportional to 217,135.50, 299,646.99 and 121,642.17 is: 167,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,135.50 : 299,646.99 = 121,642.17 : x
  2. Step 2: Convert to fraction form
    217,135.50/299,646.99 = 121,642.17/x
  3. Step 3: Cross multiply
    217,135.50x = 299,646.99 × 121,642.17
  4. Step 4: Simplify right side
    217,135.50x = 36,449,710,097.57
  5. Step 5: Solve for x
    x = 36,449,710,097.57/217,135.50
  6. Step 6: Final answer
    x = 167,866.19

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