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Finding the Fourth Proportional to 121,153.20, 181,729.80 and 83,828.40

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Solution

The fourth proportional to 121,153.20, 181,729.80 and 83,828.40 is: 125,742.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,153.20 : 181,729.80 = 83,828.40 : x
  2. Step 2: Convert to fraction form
    121,153.20/181,729.80 = 83,828.40/x
  3. Step 3: Cross multiply
    121,153.20x = 181,729.80 × 83,828.40
  4. Step 4: Simplify right side
    121,153.20x = 15,234,118,366.32
  5. Step 5: Solve for x
    x = 15,234,118,366.32/121,153.20
  6. Step 6: Final answer
    x = 125,742.60

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