Home / 126,390.62-189,522.43-42,121.26

Finding the Fourth Proportional to 126,390.62, 189,522.43 and 42,121.26

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Solution

The fourth proportional to 126,390.62, 189,522.43 and 42,121.26 is: 63,160.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,390.62 : 189,522.43 = 42,121.26 : x
  2. Step 2: Convert to fraction form
    126,390.62/189,522.43 = 42,121.26/x
  3. Step 3: Cross multiply
    126,390.62x = 189,522.43 × 42,121.26
  4. Step 4: Simplify right side
    126,390.62x = 7,982,923,444.56
  5. Step 5: Solve for x
    x = 7,982,923,444.56/126,390.62
  6. Step 6: Final answer
    x = 63,160.73

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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.