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Finding the Fourth Proportional to 171,800.76, 257,438.13 and 71,906.58

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Solution

The fourth proportional to 171,800.76, 257,438.13 and 71,906.58 is: 107,749.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,800.76 : 257,438.13 = 71,906.58 : x
  2. Step 2: Convert to fraction form
    171,800.76/257,438.13 = 71,906.58/x
  3. Step 3: Cross multiply
    171,800.76x = 257,438.13 × 71,906.58
  4. Step 4: Simplify right side
    171,800.76x = 18,511,495,489.90
  5. Step 5: Solve for x
    x = 18,511,495,489.90/171,800.76
  6. Step 6: Final answer
    x = 107,749.79

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1.5x scale

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.