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Finding the Fourth Proportional to 159,109.08, 219,571.20 and 87,487.44

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Solution

The fourth proportional to 159,109.08, 219,571.20 and 87,487.44 is: 120,733.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,109.08 : 219,571.20 = 87,487.44 : x
  2. Step 2: Convert to fraction form
    159,109.08/219,571.20 = 87,487.44/x
  3. Step 3: Cross multiply
    159,109.08x = 219,571.20 × 87,487.44
  4. Step 4: Simplify right side
    159,109.08x = 19,209,722,185.73
  5. Step 5: Solve for x
    x = 19,209,722,185.73/159,109.08
  6. Step 6: Final answer
    x = 120,733.04

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1.5x scale

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.