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Finding the Fourth Proportional to 134,478.80, 201,718.20 and 128,355.20

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Solution

The fourth proportional to 134,478.80, 201,718.20 and 128,355.20 is: 192,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,478.80 : 201,718.20 = 128,355.20 : x
  2. Step 2: Convert to fraction form
    134,478.80/201,718.20 = 128,355.20/x
  3. Step 3: Cross multiply
    134,478.80x = 201,718.20 × 128,355.20
  4. Step 4: Simplify right side
    134,478.80x = 25,891,579,904.64
  5. Step 5: Solve for x
    x = 25,891,579,904.64/134,478.80
  6. Step 6: Final answer
    x = 192,532.80

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