Home / 142,919.20-197,228.44-79,257

Finding the Fourth Proportional to 142,919.20, 197,228.44 and 79,257

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Solution

The fourth proportional to 142,919.20, 197,228.44 and 79,257 is: 109,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,919.20 : 197,228.44 = 79,257 : x
  2. Step 2: Convert to fraction form
    142,919.20/197,228.44 = 79,257/x
  3. Step 3: Cross multiply
    142,919.20x = 197,228.44 × 79,257
  4. Step 4: Simplify right side
    142,919.20x = 15,631,734,469.08
  5. Step 5: Solve for x
    x = 15,631,734,469.08/142,919.20
  6. Step 6: Final answer
    x = 109,374.63

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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.