Home / 126,336.70-189,290.92-76,311.68

Finding the Fourth Proportional to 126,336.70, 189,290.92 and 76,311.68

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Solution

The fourth proportional to 126,336.70, 189,290.92 and 76,311.68 is: 114,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,336.70 : 189,290.92 = 76,311.68 : x
  2. Step 2: Convert to fraction form
    126,336.70/189,290.92 = 76,311.68/x
  3. Step 3: Cross multiply
    126,336.70x = 189,290.92 × 76,311.68
  4. Step 4: Simplify right side
    126,336.70x = 14,445,108,113.95
  5. Step 5: Solve for x
    x = 14,445,108,113.95/126,336.70
  6. Step 6: Final answer
    x = 114,338.18

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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.