Home / 225,961.47-311,813.37-129,175.77

Finding the Fourth Proportional to 225,961.47, 311,813.37 and 129,175.77

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Solution

The fourth proportional to 225,961.47, 311,813.37 and 129,175.77 is: 178,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,961.47 : 311,813.37 = 129,175.77 : x
  2. Step 2: Convert to fraction form
    225,961.47/311,813.37 = 129,175.77/x
  3. Step 3: Cross multiply
    225,961.47x = 311,813.37 × 129,175.77
  4. Step 4: Simplify right side
    225,961.47x = 40,278,732,166.04
  5. Step 5: Solve for x
    x = 40,278,732,166.04/225,961.47
  6. Step 6: Final answer
    x = 178,254.87

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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.