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Finding the Fourth Proportional to 125,947.20, 189,066.60 and 72,681.60

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Solution

The fourth proportional to 125,947.20, 189,066.60 and 72,681.60 is: 109,106.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,947.20 : 189,066.60 = 72,681.60 : x
  2. Step 2: Convert to fraction form
    125,947.20/189,066.60 = 72,681.60/x
  3. Step 3: Cross multiply
    125,947.20x = 189,066.60 × 72,681.60
  4. Step 4: Simplify right side
    125,947.20x = 13,741,662,994.56
  5. Step 5: Solve for x
    x = 13,741,662,994.56/125,947.20
  6. Step 6: Final answer
    x = 109,106.54

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