Home / 100,930.32-139,283.92-58,513.44

Finding the Fourth Proportional to 100,930.32, 139,283.92 and 58,513.44

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Solution

The fourth proportional to 100,930.32, 139,283.92 and 58,513.44 is: 80,748.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,930.32 : 139,283.92 = 58,513.44 : x
  2. Step 2: Convert to fraction form
    100,930.32/139,283.92 = 58,513.44/x
  3. Step 3: Cross multiply
    100,930.32x = 139,283.92 × 58,513.44
  4. Step 4: Simplify right side
    100,930.32x = 8,149,981,295.88
  5. Step 5: Solve for x
    x = 8,149,981,295.88/100,930.32
  6. Step 6: Final answer
    x = 80,748.59

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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.