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Finding the Fourth Proportional to 76,189.92, 114,283.66 and 20,785.92

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Solution

The fourth proportional to 76,189.92, 114,283.66 and 20,785.92 is: 31,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,189.92 : 114,283.66 = 20,785.92 : x
  2. Step 2: Convert to fraction form
    76,189.92/114,283.66 = 20,785.92/x
  3. Step 3: Cross multiply
    76,189.92x = 114,283.66 × 20,785.92
  4. Step 4: Simplify right side
    76,189.92x = 2,375,491,014.07
  5. Step 5: Solve for x
    x = 2,375,491,014.07/76,189.92
  6. Step 6: Final answer
    x = 31,178.55

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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.