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Finding the Fourth Proportional to 181,578.70, 272,369.97 and 55,239.52

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Solution

The fourth proportional to 181,578.70, 272,369.97 and 55,239.52 is: 82,859.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,578.70 : 272,369.97 = 55,239.52 : x
  2. Step 2: Convert to fraction form
    181,578.70/272,369.97 = 55,239.52/x
  3. Step 3: Cross multiply
    181,578.70x = 272,369.97 × 55,239.52
  4. Step 4: Simplify right side
    181,578.70x = 15,045,586,405.21
  5. Step 5: Solve for x
    x = 15,045,586,405.21/181,578.70
  6. Step 6: Final answer
    x = 82,859.86

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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.