Home / 138,778.48-191,517.83-85,093.09

Finding the Fourth Proportional to 138,778.48, 191,517.83 and 85,093.09

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Solution

The fourth proportional to 138,778.48, 191,517.83 and 85,093.09 is: 117,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,778.48 : 191,517.83 = 85,093.09 : x
  2. Step 2: Convert to fraction form
    138,778.48/191,517.83 = 85,093.09/x
  3. Step 3: Cross multiply
    138,778.48x = 191,517.83 × 85,093.09
  4. Step 4: Simplify right side
    138,778.48x = 16,296,843,944.79
  5. Step 5: Solve for x
    x = 16,296,843,944.79/138,778.48
  6. Step 6: Final answer
    x = 117,430.63

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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.