Home / 131,231.90-181,105.92-73,890.95

Finding the Fourth Proportional to 131,231.90, 181,105.92 and 73,890.95

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Solution

The fourth proportional to 131,231.90, 181,105.92 and 73,890.95 is: 101,972.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,231.90 : 181,105.92 = 73,890.95 : x
  2. Step 2: Convert to fraction form
    131,231.90/181,105.92 = 73,890.95/x
  3. Step 3: Cross multiply
    131,231.90x = 181,105.92 × 73,890.95
  4. Step 4: Simplify right side
    131,231.90x = 13,382,087,573.89
  5. Step 5: Solve for x
    x = 13,382,087,573.89/131,231.90
  6. Step 6: Final answer
    x = 101,972.82

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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.