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Finding the Fourth Proportional to 131,446.99, 181,383.87 and 80,474.10

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Solution

The fourth proportional to 131,446.99, 181,383.87 and 80,474.10 is: 111,046.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,446.99 : 181,383.87 = 80,474.10 : x
  2. Step 2: Convert to fraction form
    131,446.99/181,383.87 = 80,474.10/x
  3. Step 3: Cross multiply
    131,446.99x = 181,383.87 × 80,474.10
  4. Step 4: Simplify right side
    131,446.99x = 14,596,703,692.77
  5. Step 5: Solve for x
    x = 14,596,703,692.77/131,446.99
  6. Step 6: Final answer
    x = 111,046.31

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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.