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Finding the Fourth Proportional to 171,604.60, 257,479.80 and 82,812.40

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Solution

The fourth proportional to 171,604.60, 257,479.80 and 82,812.40 is: 124,253.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,604.60 : 257,479.80 = 82,812.40 : x
  2. Step 2: Convert to fraction form
    171,604.60/257,479.80 = 82,812.40/x
  3. Step 3: Cross multiply
    171,604.60x = 257,479.80 × 82,812.40
  4. Step 4: Simplify right side
    171,604.60x = 21,322,520,189.52
  5. Step 5: Solve for x
    x = 21,322,520,189.52/171,604.60
  6. Step 6: Final answer
    x = 124,253.78

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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.