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Finding the Fourth Proportional to 102,687.09, 153,680.17 and 86,065.89

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Solution

The fourth proportional to 102,687.09, 153,680.17 and 86,065.89 is: 128,805.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,687.09 : 153,680.17 = 86,065.89 : x
  2. Step 2: Convert to fraction form
    102,687.09/153,680.17 = 86,065.89/x
  3. Step 3: Cross multiply
    102,687.09x = 153,680.17 × 86,065.89
  4. Step 4: Simplify right side
    102,687.09x = 13,226,620,606.40
  5. Step 5: Solve for x
    x = 13,226,620,606.40/102,687.09
  6. Step 6: Final answer
    x = 128,805.10

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