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Finding the Fourth Proportional to 171,251.52, 256,878 and 112,136.64

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Solution

The fourth proportional to 171,251.52, 256,878 and 112,136.64 is: 168,205.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,251.52 : 256,878 = 112,136.64 : x
  2. Step 2: Convert to fraction form
    171,251.52/256,878 = 112,136.64/x
  3. Step 3: Cross multiply
    171,251.52x = 256,878 × 112,136.64
  4. Step 4: Simplify right side
    171,251.52x = 28,805,435,809.92
  5. Step 5: Solve for x
    x = 28,805,435,809.92/171,251.52
  6. Step 6: Final answer
    x = 168,205.43

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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.