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Finding the Fourth Proportional to 171,694.18, 257,469.90 and 66,452.50

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Solution

The fourth proportional to 171,694.18, 257,469.90 and 66,452.50 is: 99,651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,694.18 : 257,469.90 = 66,452.50 : x
  2. Step 2: Convert to fraction form
    171,694.18/257,469.90 = 66,452.50/x
  3. Step 3: Cross multiply
    171,694.18x = 257,469.90 × 66,452.50
  4. Step 4: Simplify right side
    171,694.18x = 17,109,518,529.75
  5. Step 5: Solve for x
    x = 17,109,518,529.75/171,694.18
  6. Step 6: Final answer
    x = 99,651.13

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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.