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Finding the Fourth Proportional to 159,334.56, 219,889.62 and 87,713.82

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Solution

The fourth proportional to 159,334.56, 219,889.62 and 87,713.82 is: 121,049.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,334.56 : 219,889.62 = 87,713.82 : x
  2. Step 2: Convert to fraction form
    159,334.56/219,889.62 = 87,713.82/x
  3. Step 3: Cross multiply
    159,334.56x = 219,889.62 × 87,713.82
  4. Step 4: Simplify right side
    159,334.56x = 19,287,358,548.55
  5. Step 5: Solve for x
    x = 19,287,358,548.55/159,334.56
  6. Step 6: Final answer
    x = 121,049.44

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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.