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Finding the Fourth Proportional to 145,892.80, 218,936.40 and 66,966.40

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Solution

The fourth proportional to 145,892.80, 218,936.40 and 66,966.40 is: 100,494.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,892.80 : 218,936.40 = 66,966.40 : x
  2. Step 2: Convert to fraction form
    145,892.80/218,936.40 = 66,966.40/x
  3. Step 3: Cross multiply
    145,892.80x = 218,936.40 × 66,966.40
  4. Step 4: Simplify right side
    145,892.80x = 14,661,382,536.96
  5. Step 5: Solve for x
    x = 14,661,382,536.96/145,892.80
  6. Step 6: Final answer
    x = 100,494.22

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