Home / 159,021.06-219,437.82-87,405.72

Finding the Fourth Proportional to 159,021.06, 219,437.82 and 87,405.72

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Solution

The fourth proportional to 159,021.06, 219,437.82 and 87,405.72 is: 120,613.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,021.06 : 219,437.82 = 87,405.72 : x
  2. Step 2: Convert to fraction form
    159,021.06/219,437.82 = 87,405.72/x
  3. Step 3: Cross multiply
    159,021.06x = 219,437.82 × 87,405.72
  4. Step 4: Simplify right side
    159,021.06x = 19,180,120,652.33
  5. Step 5: Solve for x
    x = 19,180,120,652.33/159,021.06
  6. Step 6: Final answer
    x = 120,613.71

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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.