Home / 126,330.69-189,281.92-76,305.68

Finding the Fourth Proportional to 126,330.69, 189,281.92 and 76,305.68

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Solution

The fourth proportional to 126,330.69, 189,281.92 and 76,305.68 is: 114,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,330.69 : 189,281.92 = 76,305.68 : x
  2. Step 2: Convert to fraction form
    126,330.69/189,281.92 = 76,305.68/x
  3. Step 3: Cross multiply
    126,330.69x = 189,281.92 × 76,305.68
  4. Step 4: Simplify right side
    126,330.69x = 14,443,285,943.76
  5. Step 5: Solve for x
    x = 14,443,285,943.76/126,330.69
  6. Step 6: Final answer
    x = 114,329.20

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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.