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Finding the Fourth Proportional to 109,062.40, 150,441.96 and 68,704.96

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Solution

The fourth proportional to 109,062.40, 150,441.96 and 68,704.96 is: 94,772.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,062.40 : 150,441.96 = 68,704.96 : x
  2. Step 2: Convert to fraction form
    109,062.40/150,441.96 = 68,704.96/x
  3. Step 3: Cross multiply
    109,062.40x = 150,441.96 × 68,704.96
  4. Step 4: Simplify right side
    109,062.40x = 10,336,108,844.12
  5. Step 5: Solve for x
    x = 10,336,108,844.12/109,062.40
  6. Step 6: Final answer
    x = 94,772.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.