Home / 100,910.25-139,256.19-58,493.39

Finding the Fourth Proportional to 100,910.25, 139,256.19 and 58,493.39

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Solution

The fourth proportional to 100,910.25, 139,256.19 and 58,493.39 is: 80,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,910.25 : 139,256.19 = 58,493.39 : x
  2. Step 2: Convert to fraction form
    100,910.25/139,256.19 = 58,493.39/x
  3. Step 3: Cross multiply
    100,910.25x = 139,256.19 × 58,493.39
  4. Step 4: Simplify right side
    100,910.25x = 8,145,565,935.30
  5. Step 5: Solve for x
    x = 8,145,565,935.30/100,910.25
  6. Step 6: Final answer
    x = 80,720.90

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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.