Home / 159,103.21-219,556.75-87,482.61

Finding the Fourth Proportional to 159,103.21, 219,556.75 and 87,482.61

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Solution

The fourth proportional to 159,103.21, 219,556.75 and 87,482.61 is: 120,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,103.21 : 219,556.75 = 87,482.61 : x
  2. Step 2: Convert to fraction form
    159,103.21/219,556.75 = 87,482.61/x
  3. Step 3: Cross multiply
    159,103.21x = 219,556.75 × 87,482.61
  4. Step 4: Simplify right side
    159,103.21x = 19,207,397,533.12
  5. Step 5: Solve for x
    x = 19,207,397,533.12/159,103.21
  6. Step 6: Final answer
    x = 120,722.88

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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.