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Finding the Fourth Proportional to 143,383.91, 197,869.15 and 79,717.91

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Solution

The fourth proportional to 143,383.91, 197,869.15 and 79,717.91 is: 110,010.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,383.91 : 197,869.15 = 79,717.91 : x
  2. Step 2: Convert to fraction form
    143,383.91/197,869.15 = 79,717.91/x
  3. Step 3: Cross multiply
    143,383.91x = 197,869.15 × 79,717.91
  4. Step 4: Simplify right side
    143,383.91x = 15,773,715,386.85
  5. Step 5: Solve for x
    x = 15,773,715,386.85/143,383.91
  6. Step 6: Final answer
    x = 110,010.36

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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.