Home / 205,228.60-307,873.68-72,085.39

Finding the Fourth Proportional to 205,228.60, 307,873.68 and 72,085.39

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Solution

The fourth proportional to 205,228.60, 307,873.68 and 72,085.39 is: 108,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,228.60 : 307,873.68 = 72,085.39 : x
  2. Step 2: Convert to fraction form
    205,228.60/307,873.68 = 72,085.39/x
  3. Step 3: Cross multiply
    205,228.60x = 307,873.68 × 72,085.39
  4. Step 4: Simplify right side
    205,228.60x = 22,193,194,293.54
  5. Step 5: Solve for x
    x = 22,193,194,293.54/205,228.60
  6. Step 6: Final answer
    x = 108,138.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.