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Finding the Fourth Proportional to 159,616.78, 239,278.12 and 54,362.54

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Solution

The fourth proportional to 159,616.78, 239,278.12 and 54,362.54 is: 81,493.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,616.78 : 239,278.12 = 54,362.54 : x
  2. Step 2: Convert to fraction form
    159,616.78/239,278.12 = 54,362.54/x
  3. Step 3: Cross multiply
    159,616.78x = 239,278.12 × 54,362.54
  4. Step 4: Simplify right side
    159,616.78x = 13,007,766,831.91
  5. Step 5: Solve for x
    x = 13,007,766,831.91/159,616.78
  6. Step 6: Final answer
    x = 81,493.73

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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.