Home / 142,911.20-197,214-79,249.52

Finding the Fourth Proportional to 142,911.20, 197,214 and 79,249.52

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Solution

The fourth proportional to 142,911.20, 197,214 and 79,249.52 is: 109,362.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,911.20 : 197,214 = 79,249.52 : x
  2. Step 2: Convert to fraction form
    142,911.20/197,214 = 79,249.52/x
  3. Step 3: Cross multiply
    142,911.20x = 197,214 × 79,249.52
  4. Step 4: Simplify right side
    142,911.20x = 15,629,114,837.28
  5. Step 5: Solve for x
    x = 15,629,114,837.28/142,911.20
  6. Step 6: Final answer
    x = 109,362.42

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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.