Home / 100,979.24-139,351.92-58,562.96

Finding the Fourth Proportional to 100,979.24, 139,351.92 and 58,562.96

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Solution

The fourth proportional to 100,979.24, 139,351.92 and 58,562.96 is: 80,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,979.24 : 139,351.92 = 58,562.96 : x
  2. Step 2: Convert to fraction form
    100,979.24/139,351.92 = 58,562.96/x
  3. Step 3: Cross multiply
    100,979.24x = 139,351.92 × 58,562.96
  4. Step 4: Simplify right side
    100,979.24x = 8,160,860,916.88
  5. Step 5: Solve for x
    x = 8,160,860,916.88/100,979.24
  6. Step 6: Final answer
    x = 80,817.21

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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.