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Finding the Fourth Proportional to 171,801.76, 257,439.63 and 71,907.58

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Solution

The fourth proportional to 171,801.76, 257,439.63 and 71,907.58 is: 107,751.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,801.76 : 257,439.63 = 71,907.58 : x
  2. Step 2: Convert to fraction form
    171,801.76/257,439.63 = 71,907.58/x
  3. Step 3: Cross multiply
    171,801.76x = 257,439.63 × 71,907.58
  4. Step 4: Simplify right side
    171,801.76x = 18,511,860,789.40
  5. Step 5: Solve for x
    x = 18,511,860,789.40/171,801.76
  6. Step 6: Final answer
    x = 107,751.29

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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.