Home / 102,979.69-142,105.10-57,650.02

Finding the Fourth Proportional to 102,979.69, 142,105.10 and 57,650.02

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Solution

The fourth proportional to 102,979.69, 142,105.10 and 57,650.02 is: 79,553.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,979.69 : 142,105.10 = 57,650.02 : x
  2. Step 2: Convert to fraction form
    102,979.69/142,105.10 = 57,650.02/x
  3. Step 3: Cross multiply
    102,979.69x = 142,105.10 × 57,650.02
  4. Step 4: Simplify right side
    102,979.69x = 8,192,361,568.85
  5. Step 5: Solve for x
    x = 8,192,361,568.85/102,979.69
  6. Step 6: Final answer
    x = 79,553.18

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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.