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Finding the Fourth Proportional to 171,372.80, 257,059.20 and 108,387.20

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Solution

The fourth proportional to 171,372.80, 257,059.20 and 108,387.20 is: 162,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,372.80 : 257,059.20 = 108,387.20 : x
  2. Step 2: Convert to fraction form
    171,372.80/257,059.20 = 108,387.20/x
  3. Step 3: Cross multiply
    171,372.80x = 257,059.20 × 108,387.20
  4. Step 4: Simplify right side
    171,372.80x = 27,861,926,922.24
  5. Step 5: Solve for x
    x = 27,861,926,922.24/171,372.80
  6. Step 6: Final answer
    x = 162,580.80

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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.