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Finding the Fourth Proportional to 91.32, 137.04 and 64.29

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Solution

The fourth proportional to 91.32, 137.04 and 64.29 is: 96.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.32 : 137.04 = 64.29 : x
  2. Step 2: Convert to fraction form
    91.32/137.04 = 64.29/x
  3. Step 3: Cross multiply
    91.32x = 137.04 × 64.29
  4. Step 4: Simplify right side
    91.32x = 8,809.98
  5. Step 5: Solve for x
    x = 8,809.98/91.32
  6. Step 6: Final answer
    x = 96.47

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