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Finding the Fourth Proportional to 170,884.80, 256,324.80 and 77,390.40

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Solution

The fourth proportional to 170,884.80, 256,324.80 and 77,390.40 is: 116,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,884.80 : 256,324.80 = 77,390.40 : x
  2. Step 2: Convert to fraction form
    170,884.80/256,324.80 = 77,390.40/x
  3. Step 3: Cross multiply
    170,884.80x = 256,324.80 × 77,390.40
  4. Step 4: Simplify right side
    170,884.80x = 19,837,078,801.92
  5. Step 5: Solve for x
    x = 19,837,078,801.92/170,884.80
  6. Step 6: Final answer
    x = 116,084.51

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