Home / 159,442.20-220,031.64-87,824.70

Finding the Fourth Proportional to 159,442.20, 220,031.64 and 87,824.70

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Solution

The fourth proportional to 159,442.20, 220,031.64 and 87,824.70 is: 121,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,442.20 : 220,031.64 = 87,824.70 : x
  2. Step 2: Convert to fraction form
    159,442.20/220,031.64 = 87,824.70/x
  3. Step 3: Cross multiply
    159,442.20x = 220,031.64 × 87,824.70
  4. Step 4: Simplify right side
    159,442.20x = 19,324,212,773.51
  5. Step 5: Solve for x
    x = 19,324,212,773.51/159,442.20
  6. Step 6: Final answer
    x = 121,198.86

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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.