Home / 143,872.83-215,942.20-72,845.35

Finding the Fourth Proportional to 143,872.83, 215,942.20 and 72,845.35

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Solution

The fourth proportional to 143,872.83, 215,942.20 and 72,845.35 is: 109,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,872.83 : 215,942.20 = 72,845.35 : x
  2. Step 2: Convert to fraction form
    143,872.83/215,942.20 = 72,845.35/x
  3. Step 3: Cross multiply
    143,872.83x = 215,942.20 × 72,845.35
  4. Step 4: Simplify right side
    143,872.83x = 15,730,384,416.80
  5. Step 5: Solve for x
    x = 15,730,384,416.80/143,872.83
  6. Step 6: Final answer
    x = 109,335.34

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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.