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Finding the Fourth Proportional to 99,432.14, 137,216.37 and 54,720.14

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Solution

The fourth proportional to 99,432.14, 137,216.37 and 54,720.14 is: 75,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,432.14 : 137,216.37 = 54,720.14 : x
  2. Step 2: Convert to fraction form
    99,432.14/137,216.37 = 54,720.14/x
  3. Step 3: Cross multiply
    99,432.14x = 137,216.37 × 54,720.14
  4. Step 4: Simplify right side
    99,432.14x = 7,508,498,976.69
  5. Step 5: Solve for x
    x = 7,508,498,976.69/99,432.14
  6. Step 6: Final answer
    x = 75,513.80

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