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Finding the Fourth Proportional to 100,578.55, 150,978.62 and 84,977.04

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Solution

The fourth proportional to 100,578.55, 150,978.62 and 84,977.04 is: 127,559.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,578.55 : 150,978.62 = 84,977.04 : x
  2. Step 2: Convert to fraction form
    100,578.55/150,978.62 = 84,977.04/x
  3. Step 3: Cross multiply
    100,578.55x = 150,978.62 × 84,977.04
  4. Step 4: Simplify right side
    100,578.55x = 12,829,716,230.88
  5. Step 5: Solve for x
    x = 12,829,716,230.88/100,578.55
  6. Step 6: Final answer
    x = 127,559.17

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