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Finding the Fourth Proportional to 131,486, 197,229 and 43,934

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Solution

The fourth proportional to 131,486, 197,229 and 43,934 is: 65,901

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,486 : 197,229 = 43,934 : x
  2. Step 2: Convert to fraction form
    131,486/197,229 = 43,934/x
  3. Step 3: Cross multiply
    131,486x = 197,229 × 43,934
  4. Step 4: Simplify right side
    131,486x = 8,665,058,886
  5. Step 5: Solve for x
    x = 8,665,058,886/131,486
  6. Step 6: Final answer
    x = 65,901

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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.