Home / 159,311.32-219,855.48-87,694.36

Finding the Fourth Proportional to 159,311.32, 219,855.48 and 87,694.36

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Solution

The fourth proportional to 159,311.32, 219,855.48 and 87,694.36 is: 121,021.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,311.32 : 219,855.48 = 87,694.36 : x
  2. Step 2: Convert to fraction form
    159,311.32/219,855.48 = 87,694.36/x
  3. Step 3: Cross multiply
    159,311.32x = 219,855.48 × 87,694.36
  4. Step 4: Simplify right side
    159,311.32x = 19,280,085,611.09
  5. Step 5: Solve for x
    x = 19,280,085,611.09/159,311.32
  6. Step 6: Final answer
    x = 121,021.44

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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.