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Finding the Fourth Proportional to 171,886.15, 257,565.48 and 71,991.67

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Solution

The fourth proportional to 171,886.15, 257,565.48 and 71,991.67 is: 107,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,886.15 : 257,565.48 = 71,991.67 : x
  2. Step 2: Convert to fraction form
    171,886.15/257,565.48 = 71,991.67/x
  3. Step 3: Cross multiply
    171,886.15x = 257,565.48 × 71,991.67
  4. Step 4: Simplify right side
    171,886.15x = 18,542,569,039.55
  5. Step 5: Solve for x
    x = 18,542,569,039.55/171,886.15
  6. Step 6: Final answer
    x = 107,877.04

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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.