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Finding the Fourth Proportional to 171,493.60, 257,132.40 and 71,723.20

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Solution

The fourth proportional to 171,493.60, 257,132.40 and 71,723.20 is: 107,539.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,493.60 : 257,132.40 = 71,723.20 : x
  2. Step 2: Convert to fraction form
    171,493.60/257,132.40 = 71,723.20/x
  3. Step 3: Cross multiply
    171,493.60x = 257,132.40 × 71,723.20
  4. Step 4: Simplify right side
    171,493.60x = 18,442,358,551.68
  5. Step 5: Solve for x
    x = 18,442,358,551.68/171,493.60
  6. Step 6: Final answer
    x = 107,539.63

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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.