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Finding the Fourth Proportional to 192,635.16, 288,908.90 and 72,704.82

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Solution

The fourth proportional to 192,635.16, 288,908.90 and 72,704.82 is: 109,040.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,635.16 : 288,908.90 = 72,704.82 : x
  2. Step 2: Convert to fraction form
    192,635.16/288,908.90 = 72,704.82/x
  3. Step 3: Cross multiply
    192,635.16x = 288,908.90 × 72,704.82
  4. Step 4: Simplify right side
    192,635.16x = 21,005,069,207.37
  5. Step 5: Solve for x
    x = 21,005,069,207.37/192,635.16
  6. Step 6: Final answer
    x = 109,040.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.