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Finding the Fourth Proportional to 171,934.60, 257,996.04 and 66,757.72

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Solution

The fourth proportional to 171,934.60, 257,996.04 and 66,757.72 is: 100,173.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,934.60 : 257,996.04 = 66,757.72 : x
  2. Step 2: Convert to fraction form
    171,934.60/257,996.04 = 66,757.72/x
  3. Step 3: Cross multiply
    171,934.60x = 257,996.04 × 66,757.72
  4. Step 4: Simplify right side
    171,934.60x = 17,223,227,399.43
  5. Step 5: Solve for x
    x = 17,223,227,399.43/171,934.60
  6. Step 6: Final answer
    x = 100,173.13

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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.