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Finding the Fourth Proportional to 148,320, 204,685.92 and 81,256.32

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Solution

The fourth proportional to 148,320, 204,685.92 and 81,256.32 is: 112,136.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,320 : 204,685.92 = 81,256.32 : x
  2. Step 2: Convert to fraction form
    148,320/204,685.92 = 81,256.32/x
  3. Step 3: Cross multiply
    148,320x = 204,685.92 × 81,256.32
  4. Step 4: Simplify right side
    148,320x = 16,632,024,615.01
  5. Step 5: Solve for x
    x = 16,632,024,615.01/148,320
  6. Step 6: Final answer
    x = 112,136.09

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