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Finding the Fourth Proportional to 143,201.80, 215,032.20 and 113,863.60

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Solution

The fourth proportional to 143,201.80, 215,032.20 and 113,863.60 is: 170,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,201.80 : 215,032.20 = 113,863.60 : x
  2. Step 2: Convert to fraction form
    143,201.80/215,032.20 = 113,863.60/x
  3. Step 3: Cross multiply
    143,201.80x = 215,032.20 × 113,863.60
  4. Step 4: Simplify right side
    143,201.80x = 24,484,340,407.92
  5. Step 5: Solve for x
    x = 24,484,340,407.92/143,201.80
  6. Step 6: Final answer
    x = 170,977.88

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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.