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Finding the Fourth Proportional to 171,885.79, 257,841.10 and 71,945.42

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Solution

The fourth proportional to 171,885.79, 257,841.10 and 71,945.42 is: 107,923.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,885.79 : 257,841.10 = 71,945.42 : x
  2. Step 2: Convert to fraction form
    171,885.79/257,841.10 = 71,945.42/x
  3. Step 3: Cross multiply
    171,885.79x = 257,841.10 × 71,945.42
  4. Step 4: Simplify right side
    171,885.79x = 18,550,486,232.76
  5. Step 5: Solve for x
    x = 18,550,486,232.76/171,885.79
  6. Step 6: Final answer
    x = 107,923.33

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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.