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Finding the Fourth Proportional to 76,187.92, 114,280.67 and 20,783.92

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Solution

The fourth proportional to 76,187.92, 114,280.67 and 20,783.92 is: 31,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,187.92 : 114,280.67 = 20,783.92 : x
  2. Step 2: Convert to fraction form
    76,187.92/114,280.67 = 20,783.92/x
  3. Step 3: Cross multiply
    76,187.92x = 114,280.67 × 20,783.92
  4. Step 4: Simplify right side
    76,187.92x = 2,375,200,198.91
  5. Step 5: Solve for x
    x = 2,375,200,198.91/76,187.92
  6. Step 6: Final answer
    x = 31,175.55

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1.5x scale

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.