Home / 225,621.40-338,432.10-75,811.90

Finding the Fourth Proportional to 225,621.40, 338,432.10 and 75,811.90

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Solution

The fourth proportional to 225,621.40, 338,432.10 and 75,811.90 is: 113,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,621.40 : 338,432.10 = 75,811.90 : x
  2. Step 2: Convert to fraction form
    225,621.40/338,432.10 = 75,811.90/x
  3. Step 3: Cross multiply
    225,621.40x = 338,432.10 × 75,811.90
  4. Step 4: Simplify right side
    225,621.40x = 25,657,180,521.99
  5. Step 5: Solve for x
    x = 25,657,180,521.99/225,621.40
  6. Step 6: Final answer
    x = 113,717.85

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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.