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Finding the Fourth Proportional to 143,873.44, 215,943.26 and 72,846

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Solution

The fourth proportional to 143,873.44, 215,943.26 and 72,846 is: 109,336.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,873.44 : 215,943.26 = 72,846 : x
  2. Step 2: Convert to fraction form
    143,873.44/215,943.26 = 72,846/x
  3. Step 3: Cross multiply
    143,873.44x = 215,943.26 × 72,846
  4. Step 4: Simplify right side
    143,873.44x = 15,730,602,717.96
  5. Step 5: Solve for x
    x = 15,730,602,717.96/143,873.44
  6. Step 6: Final answer
    x = 109,336.39

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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.