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Finding the Fourth Proportional to 159,090.54, 219,542.97 and 87,469.93

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Solution

The fourth proportional to 159,090.54, 219,542.97 and 87,469.93 is: 120,707.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,090.54 : 219,542.97 = 87,469.93 : x
  2. Step 2: Convert to fraction form
    159,090.54/219,542.97 = 87,469.93/x
  3. Step 3: Cross multiply
    159,090.54x = 219,542.97 × 87,469.93
  4. Step 4: Simplify right side
    159,090.54x = 19,203,408,217.89
  5. Step 5: Solve for x
    x = 19,203,408,217.89/159,090.54
  6. Step 6: Final answer
    x = 120,707.42

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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.