Home / 100,829.73-139,129.61-58,380.06

Finding the Fourth Proportional to 100,829.73, 139,129.61 and 58,380.06

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Solution

The fourth proportional to 100,829.73, 139,129.61 and 58,380.06 is: 80,555.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,829.73 : 139,129.61 = 58,380.06 : x
  2. Step 2: Convert to fraction form
    100,829.73/139,129.61 = 58,380.06/x
  3. Step 3: Cross multiply
    100,829.73x = 139,129.61 × 58,380.06
  4. Step 4: Simplify right side
    100,829.73x = 8,122,394,979.58
  5. Step 5: Solve for x
    x = 8,122,394,979.58/100,829.73
  6. Step 6: Final answer
    x = 80,555.56

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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.