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Finding the Fourth Proportional to 157,697.28, 217,589.76 and 90,616.32

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Solution

The fourth proportional to 157,697.28, 217,589.76 and 90,616.32 is: 125,031.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,697.28 : 217,589.76 = 90,616.32 : x
  2. Step 2: Convert to fraction form
    157,697.28/217,589.76 = 90,616.32/x
  3. Step 3: Cross multiply
    157,697.28x = 217,589.76 × 90,616.32
  4. Step 4: Simplify right side
    157,697.28x = 19,717,183,320.88
  5. Step 5: Solve for x
    x = 19,717,183,320.88/157,697.28
  6. Step 6: Final answer
    x = 125,031.85

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