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Finding the Fourth Proportional to 160,640.62, 221,684.09 and 89,020.67

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Solution

The fourth proportional to 160,640.62, 221,684.09 and 89,020.67 is: 122,848.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,640.62 : 221,684.09 = 89,020.67 : x
  2. Step 2: Convert to fraction form
    160,640.62/221,684.09 = 89,020.67/x
  3. Step 3: Cross multiply
    160,640.62x = 221,684.09 × 89,020.67
  4. Step 4: Simplify right side
    160,640.62x = 19,734,466,414.33
  5. Step 5: Solve for x
    x = 19,734,466,414.33/160,640.62
  6. Step 6: Final answer
    x = 122,848.55

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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.