Home / 142,361.88-196,442.33-78,691.02

Finding the Fourth Proportional to 142,361.88, 196,442.33 and 78,691.02

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Solution

The fourth proportional to 142,361.88, 196,442.33 and 78,691.02 is: 108,584.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,361.88 : 196,442.33 = 78,691.02 : x
  2. Step 2: Convert to fraction form
    142,361.88/196,442.33 = 78,691.02/x
  3. Step 3: Cross multiply
    142,361.88x = 196,442.33 × 78,691.02
  4. Step 4: Simplify right side
    142,361.88x = 15,458,247,318.88
  5. Step 5: Solve for x
    x = 15,458,247,318.88/142,361.88
  6. Step 6: Final answer
    x = 108,584.18

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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.