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Finding the Fourth Proportional to 123,898.20, 185,920.20 and 45,020.40

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Solution

The fourth proportional to 123,898.20, 185,920.20 and 45,020.40 is: 67,557.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,898.20 : 185,920.20 = 45,020.40 : x
  2. Step 2: Convert to fraction form
    123,898.20/185,920.20 = 45,020.40/x
  3. Step 3: Cross multiply
    123,898.20x = 185,920.20 × 45,020.40
  4. Step 4: Simplify right side
    123,898.20x = 8,370,201,772.08
  5. Step 5: Solve for x
    x = 8,370,201,772.08/123,898.20
  6. Step 6: Final answer
    x = 67,557.09

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