Home / 126,105.12-188,823.96-76,118.40

Finding the Fourth Proportional to 126,105.12, 188,823.96 and 76,118.40

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Solution

The fourth proportional to 126,105.12, 188,823.96 and 76,118.40 is: 113,976.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,105.12 : 188,823.96 = 76,118.40 : x
  2. Step 2: Convert to fraction form
    126,105.12/188,823.96 = 76,118.40/x
  3. Step 3: Cross multiply
    126,105.12x = 188,823.96 × 76,118.40
  4. Step 4: Simplify right side
    126,105.12x = 14,372,977,716.86
  5. Step 5: Solve for x
    x = 14,372,977,716.86/126,105.12
  6. Step 6: Final answer
    x = 113,976.16

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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.