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Finding the Fourth Proportional to 138,801.58, 191,545.96 and 75,139.36

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Solution

The fourth proportional to 138,801.58, 191,545.96 and 75,139.36 is: 103,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,801.58 : 191,545.96 = 75,139.36 : x
  2. Step 2: Convert to fraction form
    138,801.58/191,545.96 = 75,139.36/x
  3. Step 3: Cross multiply
    138,801.58x = 191,545.96 × 75,139.36
  4. Step 4: Simplify right side
    138,801.58x = 14,392,640,844.99
  5. Step 5: Solve for x
    x = 14,392,640,844.99/138,801.58
  6. Step 6: Final answer
    x = 103,692.20

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