Home / 102,181.55-140,930.66-66,383.09

Finding the Fourth Proportional to 102,181.55, 140,930.66 and 66,383.09

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Solution

The fourth proportional to 102,181.55, 140,930.66 and 66,383.09 is: 91,556.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,181.55 : 140,930.66 = 66,383.09 : x
  2. Step 2: Convert to fraction form
    102,181.55/140,930.66 = 66,383.09/x
  3. Step 3: Cross multiply
    102,181.55x = 140,930.66 × 66,383.09
  4. Step 4: Simplify right side
    102,181.55x = 9,355,413,282.37
  5. Step 5: Solve for x
    x = 9,355,413,282.37/102,181.55
  6. Step 6: Final answer
    x = 91,556.78

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1.5x scale

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.