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Finding the Fourth Proportional to 117,720.90, 162,458.12 and 64,009.60

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Solution

The fourth proportional to 117,720.90, 162,458.12 and 64,009.60 is: 88,335.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,720.90 : 162,458.12 = 64,009.60 : x
  2. Step 2: Convert to fraction form
    117,720.90/162,458.12 = 64,009.60/x
  3. Step 3: Cross multiply
    117,720.90x = 162,458.12 × 64,009.60
  4. Step 4: Simplify right side
    117,720.90x = 10,398,879,277.95
  5. Step 5: Solve for x
    x = 10,398,879,277.95/117,720.90
  6. Step 6: Final answer
    x = 88,335.03

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