Home / 131,121.83-180,976.78-83,365.85

Finding the Fourth Proportional to 131,121.83, 180,976.78 and 83,365.85

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Solution

The fourth proportional to 131,121.83, 180,976.78 and 83,365.85 is: 115,063.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,121.83 : 180,976.78 = 83,365.85 : x
  2. Step 2: Convert to fraction form
    131,121.83/180,976.78 = 83,365.85/x
  3. Step 3: Cross multiply
    131,121.83x = 180,976.78 × 83,365.85
  4. Step 4: Simplify right side
    131,121.83x = 15,087,283,651.61
  5. Step 5: Solve for x
    x = 15,087,283,651.61/131,121.83
  6. Step 6: Final answer
    x = 115,063.09

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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.