Home / 126,377.87-189,553.55-42,128.96

Finding the Fourth Proportional to 126,377.87, 189,553.55 and 42,128.96

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Solution

The fourth proportional to 126,377.87, 189,553.55 and 42,128.96 is: 63,189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,377.87 : 189,553.55 = 42,128.96 : x
  2. Step 2: Convert to fraction form
    126,377.87/189,553.55 = 42,128.96/x
  3. Step 3: Cross multiply
    126,377.87x = 189,553.55 × 42,128.96
  4. Step 4: Simplify right side
    126,377.87x = 7,985,694,189.05
  5. Step 5: Solve for x
    x = 7,985,694,189.05/126,377.87
  6. Step 6: Final answer
    x = 63,189.02

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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.