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Finding the Fourth Proportional to 171,242.64, 256,937.47 and 66,135.42

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Solution

The fourth proportional to 171,242.64, 256,937.47 and 66,135.42 is: 99,231.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,242.64 : 256,937.47 = 66,135.42 : x
  2. Step 2: Convert to fraction form
    171,242.64/256,937.47 = 66,135.42/x
  3. Step 3: Cross multiply
    171,242.64x = 256,937.47 × 66,135.42
  4. Step 4: Simplify right side
    171,242.64x = 16,992,667,326.85
  5. Step 5: Solve for x
    x = 16,992,667,326.85/171,242.64
  6. Step 6: Final answer
    x = 99,231.52

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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.