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Finding the Fourth Proportional to 171,721.17, 257,729.99 and 119,167.56

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Solution

The fourth proportional to 171,721.17, 257,729.99 and 119,167.56 is: 178,854.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,721.17 : 257,729.99 = 119,167.56 : x
  2. Step 2: Convert to fraction form
    171,721.17/257,729.99 = 119,167.56/x
  3. Step 3: Cross multiply
    171,721.17x = 257,729.99 × 119,167.56
  4. Step 4: Simplify right side
    171,721.17x = 30,713,053,451.29
  5. Step 5: Solve for x
    x = 30,713,053,451.29/171,721.17
  6. Step 6: Final answer
    x = 178,854.21

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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.