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Finding the Fourth Proportional to 143,818.53, 215,680.85 and 47,729.94

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Solution

The fourth proportional to 143,818.53, 215,680.85 and 47,729.94 is: 71,579.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,818.53 : 215,680.85 = 47,729.94 : x
  2. Step 2: Convert to fraction form
    143,818.53/215,680.85 = 47,729.94/x
  3. Step 3: Cross multiply
    143,818.53x = 215,680.85 × 47,729.94
  4. Step 4: Simplify right side
    143,818.53x = 10,294,433,161.18
  5. Step 5: Solve for x
    x = 10,294,433,161.18/143,818.53
  6. Step 6: Final answer
    x = 71,579.32

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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.