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Finding the Fourth Proportional to 171,371.57, 257,118.91 and 76,593.87

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Solution

The fourth proportional to 171,371.57, 257,118.91 and 76,593.87 is: 114,918.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,371.57 : 257,118.91 = 76,593.87 : x
  2. Step 2: Convert to fraction form
    171,371.57/257,118.91 = 76,593.87/x
  3. Step 3: Cross multiply
    171,371.57x = 257,118.91 × 76,593.87
  4. Step 4: Simplify right side
    171,371.57x = 19,693,732,175.60
  5. Step 5: Solve for x
    x = 19,693,732,175.60/171,371.57
  6. Step 6: Final answer
    x = 114,918.32

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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.