Home / 208,922.20-313,253.70-120,131.80

Finding the Fourth Proportional to 208,922.20, 313,253.70 and 120,131.80

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Solution

The fourth proportional to 208,922.20, 313,253.70 and 120,131.80 is: 180,123.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,922.20 : 313,253.70 = 120,131.80 : x
  2. Step 2: Convert to fraction form
    208,922.20/313,253.70 = 120,131.80/x
  3. Step 3: Cross multiply
    208,922.20x = 313,253.70 × 120,131.80
  4. Step 4: Simplify right side
    208,922.20x = 37,631,730,837.66
  5. Step 5: Solve for x
    x = 37,631,730,837.66/208,922.20
  6. Step 6: Final answer
    x = 180,123.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.