Home / 225,781.05-311,587.38-129,000.83

Finding the Fourth Proportional to 225,781.05, 311,587.38 and 129,000.83

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Solution

The fourth proportional to 225,781.05, 311,587.38 and 129,000.83 is: 178,026.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,781.05 : 311,587.38 = 129,000.83 : x
  2. Step 2: Convert to fraction form
    225,781.05/311,587.38 = 129,000.83/x
  3. Step 3: Cross multiply
    225,781.05x = 311,587.38 × 129,000.83
  4. Step 4: Simplify right side
    225,781.05x = 40,195,030,637.53
  5. Step 5: Solve for x
    x = 40,195,030,637.53/225,781.05
  6. Step 6: Final answer
    x = 178,026.59

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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.