Home / 126,389.37-189,619.49-55,318.20

Finding the Fourth Proportional to 126,389.37, 189,619.49 and 55,318.20

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Solution

The fourth proportional to 126,389.37, 189,619.49 and 55,318.20 is: 82,992.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,389.37 : 189,619.49 = 55,318.20 : x
  2. Step 2: Convert to fraction form
    126,389.37/189,619.49 = 55,318.20/x
  3. Step 3: Cross multiply
    126,389.37x = 189,619.49 × 55,318.20
  4. Step 4: Simplify right side
    126,389.37x = 10,489,408,595.13
  5. Step 5: Solve for x
    x = 10,489,408,595.13/126,389.37
  6. Step 6: Final answer
    x = 82,992.81

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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.