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Finding the Fourth Proportional to 171,571.96, 257,406.54 and 71,779.96

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Solution

The fourth proportional to 171,571.96, 257,406.54 and 71,779.96 is: 107,690.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,571.96 : 257,406.54 = 71,779.96 : x
  2. Step 2: Convert to fraction form
    171,571.96/257,406.54 = 71,779.96/x
  3. Step 3: Cross multiply
    171,571.96x = 257,406.54 × 71,779.96
  4. Step 4: Simplify right side
    171,571.96x = 18,476,631,144.94
  5. Step 5: Solve for x
    x = 18,476,631,144.94/171,571.96
  6. Step 6: Final answer
    x = 107,690.27

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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.