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Finding the Fourth Proportional to 171,958.23, 257,898.73 and 72,231.03

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Solution

The fourth proportional to 171,958.23, 257,898.73 and 72,231.03 is: 108,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,958.23 : 257,898.73 = 72,231.03 : x
  2. Step 2: Convert to fraction form
    171,958.23/257,898.73 = 72,231.03/x
  3. Step 3: Cross multiply
    171,958.23x = 257,898.73 × 72,231.03
  4. Step 4: Simplify right side
    171,958.23x = 18,628,290,903.59
  5. Step 5: Solve for x
    x = 18,628,290,903.59/171,958.23
  6. Step 6: Final answer
    x = 108,330.32

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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.