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Finding the Fourth Proportional to 143,863.66, 215,600.20 and 76,378.64

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Solution

The fourth proportional to 143,863.66, 215,600.20 and 76,378.64 is: 114,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,863.66 : 215,600.20 = 76,378.64 : x
  2. Step 2: Convert to fraction form
    143,863.66/215,600.20 = 76,378.64/x
  3. Step 3: Cross multiply
    143,863.66x = 215,600.20 × 76,378.64
  4. Step 4: Simplify right side
    143,863.66x = 16,467,250,059.73
  5. Step 5: Solve for x
    x = 16,467,250,059.73/143,863.66
  6. Step 6: Final answer
    x = 114,464.28

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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.