Home / 159,135.88-219,613.20-87,521.44

Finding the Fourth Proportional to 159,135.88, 219,613.20 and 87,521.44

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Solution

The fourth proportional to 159,135.88, 219,613.20 and 87,521.44 is: 120,782.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,135.88 : 219,613.20 = 87,521.44 : x
  2. Step 2: Convert to fraction form
    159,135.88/219,613.20 = 87,521.44/x
  3. Step 3: Cross multiply
    159,135.88x = 219,613.20 × 87,521.44
  4. Step 4: Simplify right side
    159,135.88x = 19,220,863,507.01
  5. Step 5: Solve for x
    x = 19,220,863,507.01/159,135.88
  6. Step 6: Final answer
    x = 120,782.71

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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.