Home / 142,735.05-196,971.35-82,305.45

Finding the Fourth Proportional to 142,735.05, 196,971.35 and 82,305.45

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Solution

The fourth proportional to 142,735.05, 196,971.35 and 82,305.45 is: 113,579.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,735.05 : 196,971.35 = 82,305.45 : x
  2. Step 2: Convert to fraction form
    142,735.05/196,971.35 = 82,305.45/x
  3. Step 3: Cross multiply
    142,735.05x = 196,971.35 × 82,305.45
  4. Step 4: Simplify right side
    142,735.05x = 16,211,815,187.33
  5. Step 5: Solve for x
    x = 16,211,815,187.33/142,735.05
  6. Step 6: Final answer
    x = 113,579.78

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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.