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Finding the Fourth Proportional to 171,404.30, 257,008.01 and 91,343.70

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Solution

The fourth proportional to 171,404.30, 257,008.01 and 91,343.70 is: 136,963.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,404.30 : 257,008.01 = 91,343.70 : x
  2. Step 2: Convert to fraction form
    171,404.30/257,008.01 = 91,343.70/x
  3. Step 3: Cross multiply
    171,404.30x = 257,008.01 × 91,343.70
  4. Step 4: Simplify right side
    171,404.30x = 23,476,062,791.40
  5. Step 5: Solve for x
    x = 23,476,062,791.40/171,404.30
  6. Step 6: Final answer
    x = 136,963.09

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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.