Home / 159,521.80-220,144.71-87,906.44

Finding the Fourth Proportional to 159,521.80, 220,144.71 and 87,906.44

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Solution

The fourth proportional to 159,521.80, 220,144.71 and 87,906.44 is: 121,313.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,521.80 : 220,144.71 = 87,906.44 : x
  2. Step 2: Convert to fraction form
    159,521.80/220,144.71 = 87,906.44/x
  3. Step 3: Cross multiply
    159,521.80x = 220,144.71 × 87,906.44
  4. Step 4: Simplify right side
    159,521.80x = 19,352,137,740.93
  5. Step 5: Solve for x
    x = 19,352,137,740.93/159,521.80
  6. Step 6: Final answer
    x = 121,313.44

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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.