Home / 126,909.70-190,364.55-87,511.30

Finding the Fourth Proportional to 126,909.70, 190,364.55 and 87,511.30

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Solution

The fourth proportional to 126,909.70, 190,364.55 and 87,511.30 is: 131,266.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,909.70 : 190,364.55 = 87,511.30 : x
  2. Step 2: Convert to fraction form
    126,909.70/190,364.55 = 87,511.30/x
  3. Step 3: Cross multiply
    126,909.70x = 190,364.55 × 87,511.30
  4. Step 4: Simplify right side
    126,909.70x = 16,659,049,244.42
  5. Step 5: Solve for x
    x = 16,659,049,244.42/126,909.70
  6. Step 6: Final answer
    x = 131,266.95

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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.