Home / 159,120.11-219,591.39-87,505.58

Finding the Fourth Proportional to 159,120.11, 219,591.39 and 87,505.58

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Solution

The fourth proportional to 159,120.11, 219,591.39 and 87,505.58 is: 120,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,120.11 : 219,591.39 = 87,505.58 : x
  2. Step 2: Convert to fraction form
    159,120.11/219,591.39 = 87,505.58/x
  3. Step 3: Cross multiply
    159,120.11x = 219,591.39 × 87,505.58
  4. Step 4: Simplify right side
    159,120.11x = 19,215,470,847.00
  5. Step 5: Solve for x
    x = 19,215,470,847.00/159,120.11
  6. Step 6: Final answer
    x = 120,760.80

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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.