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Finding the Fourth Proportional to 92,215.80, 138,323.70 and 79,093.80

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Solution

The fourth proportional to 92,215.80, 138,323.70 and 79,093.80 is: 118,640.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,215.80 : 138,323.70 = 79,093.80 : x
  2. Step 2: Convert to fraction form
    92,215.80/138,323.70 = 79,093.80/x
  3. Step 3: Cross multiply
    92,215.80x = 138,323.70 × 79,093.80
  4. Step 4: Simplify right side
    92,215.80x = 10,940,547,063.06
  5. Step 5: Solve for x
    x = 10,940,547,063.06/92,215.80
  6. Step 6: Final answer
    x = 118,640.70

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