Home / 138,832.20-191,588.19-75,169.98

Finding the Fourth Proportional to 138,832.20, 191,588.19 and 75,169.98

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Solution

The fourth proportional to 138,832.20, 191,588.19 and 75,169.98 is: 103,734.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,832.20 : 191,588.19 = 75,169.98 : x
  2. Step 2: Convert to fraction form
    138,832.20/191,588.19 = 75,169.98/x
  3. Step 3: Cross multiply
    138,832.20x = 191,588.19 × 75,169.98
  4. Step 4: Simplify right side
    138,832.20x = 14,401,680,410.54
  5. Step 5: Solve for x
    x = 14,401,680,410.54/138,832.20
  6. Step 6: Final answer
    x = 103,734.44

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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.