Home / 126,333.69-189,286.41-76,308.69

Finding the Fourth Proportional to 126,333.69, 189,286.41 and 76,308.69

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Solution

The fourth proportional to 126,333.69, 189,286.41 and 76,308.69 is: 114,333.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,333.69 : 189,286.41 = 76,308.69 : x
  2. Step 2: Convert to fraction form
    126,333.69/189,286.41 = 76,308.69/x
  3. Step 3: Cross multiply
    126,333.69x = 189,286.41 × 76,308.69
  4. Step 4: Simplify right side
    126,333.69x = 14,444,197,981.90
  5. Step 5: Solve for x
    x = 14,444,197,981.90/126,333.69
  6. Step 6: Final answer
    x = 114,333.70

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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.