Home / 159,283.45-219,761.67-90,361.55

Finding the Fourth Proportional to 159,283.45, 219,761.67 and 90,361.55

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Solution

The fourth proportional to 159,283.45, 219,761.67 and 90,361.55 is: 124,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,283.45 : 219,761.67 = 90,361.55 : x
  2. Step 2: Convert to fraction form
    159,283.45/219,761.67 = 90,361.55/x
  3. Step 3: Cross multiply
    159,283.45x = 219,761.67 × 90,361.55
  4. Step 4: Simplify right side
    159,283.45x = 19,858,006,020.05
  5. Step 5: Solve for x
    x = 19,858,006,020.05/159,283.45
  6. Step 6: Final answer
    x = 124,670.87

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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.