Home / 225,987.12-311,862.20-129,193.07

Finding the Fourth Proportional to 225,987.12, 311,862.20 and 129,193.07

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Solution

The fourth proportional to 225,987.12, 311,862.20 and 129,193.07 is: 178,286.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,987.12 : 311,862.20 = 129,193.07 : x
  2. Step 2: Convert to fraction form
    225,987.12/311,862.20 = 129,193.07/x
  3. Step 3: Cross multiply
    225,987.12x = 311,862.20 × 129,193.07
  4. Step 4: Simplify right side
    225,987.12x = 40,290,432,829.68
  5. Step 5: Solve for x
    x = 40,290,432,829.68/225,987.12
  6. Step 6: Final answer
    x = 178,286.41

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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.