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Finding the Fourth Proportional to 171,959.34, 257,839.69 and 66,655.29

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Solution

The fourth proportional to 171,959.34, 257,839.69 and 66,655.29 is: 99,944.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,959.34 : 257,839.69 = 66,655.29 : x
  2. Step 2: Convert to fraction form
    171,959.34/257,839.69 = 66,655.29/x
  3. Step 3: Cross multiply
    171,959.34x = 257,839.69 × 66,655.29
  4. Step 4: Simplify right side
    171,959.34x = 17,186,379,310.46
  5. Step 5: Solve for x
    x = 17,186,379,310.46/171,959.34
  6. Step 6: Final answer
    x = 99,944.44

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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.