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Finding the Fourth Proportional to 159,170.72, 219,654.48 and 87,548.96

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Solution

The fourth proportional to 159,170.72, 219,654.48 and 87,548.96 is: 120,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,170.72 : 219,654.48 = 87,548.96 : x
  2. Step 2: Convert to fraction form
    159,170.72/219,654.48 = 87,548.96/x
  3. Step 3: Cross multiply
    159,170.72x = 219,654.48 × 87,548.96
  4. Step 4: Simplify right side
    159,170.72x = 19,230,521,283.34
  5. Step 5: Solve for x
    x = 19,230,521,283.34/159,170.72
  6. Step 6: Final answer
    x = 120,816.95

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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.