Home / 142,948.36-197,268.87-79,286.16

Finding the Fourth Proportional to 142,948.36, 197,268.87 and 79,286.16

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Solution

The fourth proportional to 142,948.36, 197,268.87 and 79,286.16 is: 109,414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,948.36 : 197,268.87 = 79,286.16 : x
  2. Step 2: Convert to fraction form
    142,948.36/197,268.87 = 79,286.16/x
  3. Step 3: Cross multiply
    142,948.36x = 197,268.87 × 79,286.16
  4. Step 4: Simplify right side
    142,948.36x = 15,640,691,189.84
  5. Step 5: Solve for x
    x = 15,640,691,189.84/142,948.36
  6. Step 6: Final answer
    x = 109,414.97

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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.