Home / 143,155.90-197,536.56-79,481.44

Finding the Fourth Proportional to 143,155.90, 197,536.56 and 79,481.44

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Solution

The fourth proportional to 143,155.90, 197,536.56 and 79,481.44 is: 109,674.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,155.90 : 197,536.56 = 79,481.44 : x
  2. Step 2: Convert to fraction form
    143,155.90/197,536.56 = 79,481.44/x
  3. Step 3: Cross multiply
    143,155.90x = 197,536.56 × 79,481.44
  4. Step 4: Simplify right side
    143,155.90x = 15,700,490,241.45
  5. Step 5: Solve for x
    x = 15,700,490,241.45/143,155.90
  6. Step 6: Final answer
    x = 109,674.07

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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.