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Finding the Fourth Proportional to 105,520.32, 158,191.65 and 72,158.76

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Solution

The fourth proportional to 105,520.32, 158,191.65 and 72,158.76 is: 108,177.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,520.32 : 158,191.65 = 72,158.76 : x
  2. Step 2: Convert to fraction form
    105,520.32/158,191.65 = 72,158.76/x
  3. Step 3: Cross multiply
    105,520.32x = 158,191.65 × 72,158.76
  4. Step 4: Simplify right side
    105,520.32x = 11,414,913,306.35
  5. Step 5: Solve for x
    x = 11,414,913,306.35/105,520.32
  6. Step 6: Final answer
    x = 108,177.39

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