Home / 126,040.91-188,617.11-78,678.24

Finding the Fourth Proportional to 126,040.91, 188,617.11 and 78,678.24

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Solution

The fourth proportional to 126,040.91, 188,617.11 and 78,678.24 is: 117,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,040.91 : 188,617.11 = 78,678.24 : x
  2. Step 2: Convert to fraction form
    126,040.91/188,617.11 = 78,678.24/x
  3. Step 3: Cross multiply
    126,040.91x = 188,617.11 × 78,678.24
  4. Step 4: Simplify right side
    126,040.91x = 14,840,061,246.33
  5. Step 5: Solve for x
    x = 14,840,061,246.33/126,040.91
  6. Step 6: Final answer
    x = 117,740.04

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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.