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Finding the Fourth Proportional to 159,388.33, 219,957.33 and 87,768.64

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Solution

The fourth proportional to 159,388.33, 219,957.33 and 87,768.64 is: 121,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,388.33 : 219,957.33 = 87,768.64 : x
  2. Step 2: Convert to fraction form
    159,388.33/219,957.33 = 87,768.64/x
  3. Step 3: Cross multiply
    159,388.33x = 219,957.33 × 87,768.64
  4. Step 4: Simplify right side
    159,388.33x = 19,305,355,712.13
  5. Step 5: Solve for x
    x = 19,305,355,712.13/159,388.33
  6. Step 6: Final answer
    x = 121,121.51

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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.