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Finding the Fourth Proportional to 159,197.81, 219,690.63 and 87,573.56

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Solution

The fourth proportional to 159,197.81, 219,690.63 and 87,573.56 is: 120,850.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,197.81 : 219,690.63 = 87,573.56 : x
  2. Step 2: Convert to fraction form
    159,197.81/219,690.63 = 87,573.56/x
  3. Step 3: Cross multiply
    159,197.81x = 219,690.63 × 87,573.56
  4. Step 4: Simplify right side
    159,197.81x = 19,239,089,469.29
  5. Step 5: Solve for x
    x = 19,239,089,469.29/159,197.81
  6. Step 6: Final answer
    x = 120,850.22

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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.