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Finding the Fourth Proportional to 159,168.96, 219,648.53 and 87,548.96

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Solution

The fourth proportional to 159,168.96, 219,648.53 and 87,548.96 is: 120,815.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,168.96 : 219,648.53 = 87,548.96 : x
  2. Step 2: Convert to fraction form
    159,168.96/219,648.53 = 87,548.96/x
  3. Step 3: Cross multiply
    159,168.96x = 219,648.53 × 87,548.96
  4. Step 4: Simplify right side
    159,168.96x = 19,230,000,367.03
  5. Step 5: Solve for x
    x = 19,230,000,367.03/159,168.96
  6. Step 6: Final answer
    x = 120,815.02

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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.