Home / 126,178.26-189,542.13-76,281.87

Finding the Fourth Proportional to 126,178.26, 189,542.13 and 76,281.87

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Solution

The fourth proportional to 126,178.26, 189,542.13 and 76,281.87 is: 114,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,178.26 : 189,542.13 = 76,281.87 : x
  2. Step 2: Convert to fraction form
    126,178.26/189,542.13 = 76,281.87/x
  3. Step 3: Cross multiply
    126,178.26x = 189,542.13 × 76,281.87
  4. Step 4: Simplify right side
    126,178.26x = 14,458,628,120.18
  5. Step 5: Solve for x
    x = 14,458,628,120.18/126,178.26
  6. Step 6: Final answer
    x = 114,588.90

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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.