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Finding the Fourth Proportional to 171,199.80, 256,843.44 and 65,990.52

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Solution

The fourth proportional to 171,199.80, 256,843.44 and 65,990.52 is: 99,002.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,199.80 : 256,843.44 = 65,990.52 : x
  2. Step 2: Convert to fraction form
    171,199.80/256,843.44 = 65,990.52/x
  3. Step 3: Cross multiply
    171,199.80x = 256,843.44 × 65,990.52
  4. Step 4: Simplify right side
    171,199.80x = 16,949,232,164.19
  5. Step 5: Solve for x
    x = 16,949,232,164.19/171,199.80
  6. Step 6: Final answer
    x = 99,002.64

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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.