Home / 115,285.40-171,782.06-102,708.78

Finding the Fourth Proportional to 115,285.40, 171,782.06 and 102,708.78

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Solution

The fourth proportional to 115,285.40, 171,782.06 and 102,708.78 is: 153,042.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,285.40 : 171,782.06 = 102,708.78 : x
  2. Step 2: Convert to fraction form
    115,285.40/171,782.06 = 102,708.78/x
  3. Step 3: Cross multiply
    115,285.40x = 171,782.06 × 102,708.78
  4. Step 4: Simplify right side
    115,285.40x = 17,643,526,389.04
  5. Step 5: Solve for x
    x = 17,643,526,389.04/115,285.40
  6. Step 6: Final answer
    x = 153,042.16

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