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Finding the Fourth Proportional to 145,138.11, 217,790.07 and 56,380.06

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Solution

The fourth proportional to 145,138.11, 217,790.07 and 56,380.06 is: 84,602.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,138.11 : 217,790.07 = 56,380.06 : x
  2. Step 2: Convert to fraction form
    145,138.11/217,790.07 = 56,380.06/x
  3. Step 3: Cross multiply
    145,138.11x = 217,790.07 × 56,380.06
  4. Step 4: Simplify right side
    145,138.11x = 12,279,017,214.00
  5. Step 5: Solve for x
    x = 12,279,017,214.00/145,138.11
  6. Step 6: Final answer
    x = 84,602.30

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