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Finding the Fourth Proportional to 155,990.29, 215,266.37 and 84,370.09

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Solution

The fourth proportional to 155,990.29, 215,266.37 and 84,370.09 is: 116,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,990.29 : 215,266.37 = 84,370.09 : x
  2. Step 2: Convert to fraction form
    155,990.29/215,266.37 = 84,370.09/x
  3. Step 3: Cross multiply
    155,990.29x = 215,266.37 × 84,370.09
  4. Step 4: Simplify right side
    155,990.29x = 18,162,043,010.87
  5. Step 5: Solve for x
    x = 18,162,043,010.87/155,990.29
  6. Step 6: Final answer
    x = 116,430.60

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