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Finding the Fourth Proportional to 143,308.63, 197,774.09 and 79,650.46

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Solution

The fourth proportional to 143,308.63, 197,774.09 and 79,650.46 is: 109,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,308.63 : 197,774.09 = 79,650.46 : x
  2. Step 2: Convert to fraction form
    143,308.63/197,774.09 = 79,650.46/x
  3. Step 3: Cross multiply
    143,308.63x = 197,774.09 × 79,650.46
  4. Step 4: Simplify right side
    143,308.63x = 15,752,797,244.58
  5. Step 5: Solve for x
    x = 15,752,797,244.58/143,308.63
  6. Step 6: Final answer
    x = 109,922.18

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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.