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Finding the Fourth Proportional to 163,428.64, 225,523.92 and 90,828.16

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Solution

The fourth proportional to 163,428.64, 225,523.92 and 90,828.16 is: 125,338.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,428.64 : 225,523.92 = 90,828.16 : x
  2. Step 2: Convert to fraction form
    163,428.64/225,523.92 = 90,828.16/x
  3. Step 3: Cross multiply
    163,428.64x = 225,523.92 × 90,828.16
  4. Step 4: Simplify right side
    163,428.64x = 20,483,922,689.59
  5. Step 5: Solve for x
    x = 20,483,922,689.59/163,428.64
  6. Step 6: Final answer
    x = 125,338.64

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