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Finding the Fourth Proportional to 216,690.53, 299,031.21 and 121,197.15

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Solution

The fourth proportional to 216,690.53, 299,031.21 and 121,197.15 is: 167,251.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,690.53 : 299,031.21 = 121,197.15 : x
  2. Step 2: Convert to fraction form
    216,690.53/299,031.21 = 121,197.15/x
  3. Step 3: Cross multiply
    216,690.53x = 299,031.21 × 121,197.15
  4. Step 4: Simplify right side
    216,690.53x = 36,241,730,413.05
  5. Step 5: Solve for x
    x = 36,241,730,413.05/216,690.53
  6. Step 6: Final answer
    x = 167,251.11

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