Home / 126,178.20-189,267.30-103,627.80

Finding the Fourth Proportional to 126,178.20, 189,267.30 and 103,627.80

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Solution

The fourth proportional to 126,178.20, 189,267.30 and 103,627.80 is: 155,441.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,178.20 : 189,267.30 = 103,627.80 : x
  2. Step 2: Convert to fraction form
    126,178.20/189,267.30 = 103,627.80/x
  3. Step 3: Cross multiply
    126,178.20x = 189,267.30 × 103,627.80
  4. Step 4: Simplify right side
    126,178.20x = 19,613,353,910.94
  5. Step 5: Solve for x
    x = 19,613,353,910.94/126,178.20
  6. Step 6: Final answer
    x = 155,441.70

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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.