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Finding the Fourth Proportional to 131,791.72, 197,720.22 and 38,298.28

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Solution

The fourth proportional to 131,791.72, 197,720.22 and 38,298.28 is: 57,456.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,791.72 : 197,720.22 = 38,298.28 : x
  2. Step 2: Convert to fraction form
    131,791.72/197,720.22 = 38,298.28/x
  3. Step 3: Cross multiply
    131,791.72x = 197,720.22 × 38,298.28
  4. Step 4: Simplify right side
    131,791.72x = 7,572,344,347.22
  5. Step 5: Solve for x
    x = 7,572,344,347.22/131,791.72
  6. Step 6: Final answer
    x = 57,456.91

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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.