Home / 138,621.44-191,327.24-87,601.70

Finding the Fourth Proportional to 138,621.44, 191,327.24 and 87,601.70

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Solution

The fourth proportional to 138,621.44, 191,327.24 and 87,601.70 is: 120,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,621.44 : 191,327.24 = 87,601.70 : x
  2. Step 2: Convert to fraction form
    138,621.44/191,327.24 = 87,601.70/x
  3. Step 3: Cross multiply
    138,621.44x = 191,327.24 × 87,601.70
  4. Step 4: Simplify right side
    138,621.44x = 16,760,591,042.30
  5. Step 5: Solve for x
    x = 16,760,591,042.30/138,621.44
  6. Step 6: Final answer
    x = 120,909.08

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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.