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Finding the Fourth Proportional to 170.15, 254.91 and 123.98

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Solution

The fourth proportional to 170.15, 254.91 and 123.98 is: 185.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.15 : 254.91 = 123.98 : x
  2. Step 2: Convert to fraction form
    170.15/254.91 = 123.98/x
  3. Step 3: Cross multiply
    170.15x = 254.91 × 123.98
  4. Step 4: Simplify right side
    170.15x = 31,603.74
  5. Step 5: Solve for x
    x = 31,603.74/170.15
  6. Step 6: Final answer
    x = 185.74

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