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Finding the Fourth Proportional to 171,012.60, 256,295.20 and 91,956.60

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Solution

The fourth proportional to 171,012.60, 256,295.20 and 91,956.60 is: 137,814.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,012.60 : 256,295.20 = 91,956.60 : x
  2. Step 2: Convert to fraction form
    171,012.60/256,295.20 = 91,956.60/x
  3. Step 3: Cross multiply
    171,012.60x = 256,295.20 × 91,956.60
  4. Step 4: Simplify right side
    171,012.60x = 23,568,035,188.32
  5. Step 5: Solve for x
    x = 23,568,035,188.32/171,012.60
  6. Step 6: Final answer
    x = 137,814.61

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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.