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Finding the Fourth Proportional to 131,135.94, 180,996.21 and 83,379.96

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Solution

The fourth proportional to 131,135.94, 180,996.21 and 83,379.96 is: 115,082.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,135.94 : 180,996.21 = 83,379.96 : x
  2. Step 2: Convert to fraction form
    131,135.94/180,996.21 = 83,379.96/x
  3. Step 3: Cross multiply
    131,135.94x = 180,996.21 × 83,379.96
  4. Step 4: Simplify right side
    131,135.94x = 15,091,456,749.95
  5. Step 5: Solve for x
    x = 15,091,456,749.95/131,135.94
  6. Step 6: Final answer
    x = 115,082.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.