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Finding the Fourth Proportional to 129,879.73, 194,830.73 and 45,632.64

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Solution

The fourth proportional to 129,879.73, 194,830.73 and 45,632.64 is: 68,452.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,879.73 : 194,830.73 = 45,632.64 : x
  2. Step 2: Convert to fraction form
    129,879.73/194,830.73 = 45,632.64/x
  3. Step 3: Cross multiply
    129,879.73x = 194,830.73 × 45,632.64
  4. Step 4: Simplify right side
    129,879.73x = 8,890,640,563.03
  5. Step 5: Solve for x
    x = 8,890,640,563.03/129,879.73
  6. Step 6: Final answer
    x = 68,452.87

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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.