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Finding the Fourth Proportional to 156,387.60, 215,816.01 and 84,768.12

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Solution

The fourth proportional to 156,387.60, 215,816.01 and 84,768.12 is: 116,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,387.60 : 215,816.01 = 84,768.12 : x
  2. Step 2: Convert to fraction form
    156,387.60/215,816.01 = 84,768.12/x
  3. Step 3: Cross multiply
    156,387.60x = 215,816.01 × 84,768.12
  4. Step 4: Simplify right side
    156,387.60x = 18,294,317,433.60
  5. Step 5: Solve for x
    x = 18,294,317,433.60/156,387.60
  6. Step 6: Final answer
    x = 116,980.61

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