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Finding the Fourth Proportional to 171,627.20, 257,367.90 and 82,907.90

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Solution

The fourth proportional to 171,627.20, 257,367.90 and 82,907.90 is: 124,326.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,627.20 : 257,367.90 = 82,907.90 : x
  2. Step 2: Convert to fraction form
    171,627.20/257,367.90 = 82,907.90/x
  3. Step 3: Cross multiply
    171,627.20x = 257,367.90 × 82,907.90
  4. Step 4: Simplify right side
    171,627.20x = 21,337,832,116.41
  5. Step 5: Solve for x
    x = 21,337,832,116.41/171,627.20
  6. Step 6: Final answer
    x = 124,326.63

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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.