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Finding the Fourth Proportional to 207,358.10, 310,840.12 and 81,079.30

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Solution

The fourth proportional to 207,358.10, 310,840.12 and 81,079.30 is: 121,541.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,358.10 : 310,840.12 = 81,079.30 : x
  2. Step 2: Convert to fraction form
    207,358.10/310,840.12 = 81,079.30/x
  3. Step 3: Cross multiply
    207,358.10x = 310,840.12 × 81,079.30
  4. Step 4: Simplify right side
    207,358.10x = 25,202,699,341.52
  5. Step 5: Solve for x
    x = 25,202,699,341.52/207,358.10
  6. Step 6: Final answer
    x = 121,541.91

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