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Finding the Fourth Proportional to 143,894.80, 215,873.32 and 55,148.37

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Solution

The fourth proportional to 143,894.80, 215,873.32 and 55,148.37 is: 82,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,894.80 : 215,873.32 = 55,148.37 : x
  2. Step 2: Convert to fraction form
    143,894.80/215,873.32 = 55,148.37/x
  3. Step 3: Cross multiply
    143,894.80x = 215,873.32 × 55,148.37
  4. Step 4: Simplify right side
    143,894.80x = 11,905,061,724.49
  5. Step 5: Solve for x
    x = 11,905,061,724.49/143,894.80
  6. Step 6: Final answer
    x = 82,734.48

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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.