Home / 210,531.92-315,799.24-84,182.78

Finding the Fourth Proportional to 210,531.92, 315,799.24 and 84,182.78

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Solution

The fourth proportional to 210,531.92, 315,799.24 and 84,182.78 is: 126,274.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,531.92 : 315,799.24 = 84,182.78 : x
  2. Step 2: Convert to fraction form
    210,531.92/315,799.24 = 84,182.78/x
  3. Step 3: Cross multiply
    210,531.92x = 315,799.24 × 84,182.78
  4. Step 4: Simplify right side
    210,531.92x = 26,584,856,905.60
  5. Step 5: Solve for x
    x = 26,584,856,905.60/210,531.92
  6. Step 6: Final answer
    x = 126,274.71

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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.