Home / 225,947.49-311,818.85-129,156.33

Finding the Fourth Proportional to 225,947.49, 311,818.85 and 129,156.33

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Solution

The fourth proportional to 225,947.49, 311,818.85 and 129,156.33 is: 178,242.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,947.49 : 311,818.85 = 129,156.33 : x
  2. Step 2: Convert to fraction form
    225,947.49/311,818.85 = 129,156.33/x
  3. Step 3: Cross multiply
    225,947.49x = 311,818.85 × 129,156.33
  4. Step 4: Simplify right side
    225,947.49x = 40,273,379,298.70
  5. Step 5: Solve for x
    x = 40,273,379,298.70/225,947.49
  6. Step 6: Final answer
    x = 178,242.21

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1.5x scale

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.