Home / 131,391.18-181,326.42-80,387.96

Finding the Fourth Proportional to 131,391.18, 181,326.42 and 80,387.96

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Solution

The fourth proportional to 131,391.18, 181,326.42 and 80,387.96 is: 110,939.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,391.18 : 181,326.42 = 80,387.96 : x
  2. Step 2: Convert to fraction form
    131,391.18/181,326.42 = 80,387.96/x
  3. Step 3: Cross multiply
    131,391.18x = 181,326.42 × 80,387.96
  4. Step 4: Simplify right side
    131,391.18x = 14,576,460,091.27
  5. Step 5: Solve for x
    x = 14,576,460,091.27/131,391.18
  6. Step 6: Final answer
    x = 110,939.41

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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.