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Finding the Fourth Proportional to 137,723.40, 206,190.90 and 84,776.40

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Solution

The fourth proportional to 137,723.40, 206,190.90 and 84,776.40 is: 126,921.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,723.40 : 206,190.90 = 84,776.40 : x
  2. Step 2: Convert to fraction form
    137,723.40/206,190.90 = 84,776.40/x
  3. Step 3: Cross multiply
    137,723.40x = 206,190.90 × 84,776.40
  4. Step 4: Simplify right side
    137,723.40x = 17,480,122,214.76
  5. Step 5: Solve for x
    x = 17,480,122,214.76/137,723.40
  6. Step 6: Final answer
    x = 126,921.95

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