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Finding the Fourth Proportional to 145,956.20, 218,764.20 and 67,078.40

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Solution

The fourth proportional to 145,956.20, 218,764.20 and 67,078.40 is: 100,539.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,956.20 : 218,764.20 = 67,078.40 : x
  2. Step 2: Convert to fraction form
    145,956.20/218,764.20 = 67,078.40/x
  3. Step 3: Cross multiply
    145,956.20x = 218,764.20 × 67,078.40
  4. Step 4: Simplify right side
    145,956.20x = 14,674,352,513.28
  5. Step 5: Solve for x
    x = 14,674,352,513.28/145,956.20
  6. Step 6: Final answer
    x = 100,539.43

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