Home / 131,661.19-181,692.45-71,231.79

Finding the Fourth Proportional to 131,661.19, 181,692.45 and 71,231.79

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Solution

The fourth proportional to 131,661.19, 181,692.45 and 71,231.79 is: 98,299.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,661.19 : 181,692.45 = 71,231.79 : x
  2. Step 2: Convert to fraction form
    131,661.19/181,692.45 = 71,231.79/x
  3. Step 3: Cross multiply
    131,661.19x = 181,692.45 × 71,231.79
  4. Step 4: Simplify right side
    131,661.19x = 12,942,278,086.83
  5. Step 5: Solve for x
    x = 12,942,278,086.83/131,661.19
  6. Step 6: Final answer
    x = 98,299.88

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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.