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Finding the Fourth Proportional to 156,646.80, 216,171.86 and 85,026.20

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Solution

The fourth proportional to 156,646.80, 216,171.86 and 85,026.20 is: 117,335.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,646.80 : 216,171.86 = 85,026.20 : x
  2. Step 2: Convert to fraction form
    156,646.80/216,171.86 = 85,026.20/x
  3. Step 3: Cross multiply
    156,646.80x = 216,171.86 × 85,026.20
  4. Step 4: Simplify right side
    156,646.80x = 18,380,270,296.74
  5. Step 5: Solve for x
    x = 18,380,270,296.74/156,646.80
  6. Step 6: Final answer
    x = 117,335.75

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