Home / 159,278.16-219,799.44-90,380.17

Finding the Fourth Proportional to 159,278.16, 219,799.44 and 90,380.17

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Solution

The fourth proportional to 159,278.16, 219,799.44 and 90,380.17 is: 124,722.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,278.16 : 219,799.44 = 90,380.17 : x
  2. Step 2: Convert to fraction form
    159,278.16/219,799.44 = 90,380.17/x
  3. Step 3: Cross multiply
    159,278.16x = 219,799.44 × 90,380.17
  4. Step 4: Simplify right side
    159,278.16x = 19,865,511,027.85
  5. Step 5: Solve for x
    x = 19,865,511,027.85/159,278.16
  6. Step 6: Final answer
    x = 124,722.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.