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Finding the Fourth Proportional to 159,343.56, 219,902.04 and 87,722.82

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Solution

The fourth proportional to 159,343.56, 219,902.04 and 87,722.82 is: 121,061.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,343.56 : 219,902.04 = 87,722.82 : x
  2. Step 2: Convert to fraction form
    159,343.56/219,902.04 = 87,722.82/x
  3. Step 3: Cross multiply
    159,343.56x = 219,902.04 × 87,722.82
  4. Step 4: Simplify right side
    159,343.56x = 19,290,427,072.55
  5. Step 5: Solve for x
    x = 19,290,427,072.55/159,343.56
  6. Step 6: Final answer
    x = 121,061.86

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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.