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Finding the Fourth Proportional to 171,855.59, 257,811.93 and 72,023.29

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Solution

The fourth proportional to 171,855.59, 257,811.93 and 72,023.29 is: 108,046.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,855.59 : 257,811.93 = 72,023.29 : x
  2. Step 2: Convert to fraction form
    171,855.59/257,811.93 = 72,023.29/x
  3. Step 3: Cross multiply
    171,855.59x = 257,811.93 × 72,023.29
  4. Step 4: Simplify right side
    171,855.59x = 18,568,463,399.85
  5. Step 5: Solve for x
    x = 18,568,463,399.85/171,855.59
  6. Step 6: Final answer
    x = 108,046.90

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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.