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Finding the Fourth Proportional to 159,179.56, 219,675.18 and 87,558.28

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Solution

The fourth proportional to 159,179.56, 219,675.18 and 87,558.28 is: 120,834.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,179.56 : 219,675.18 = 87,558.28 : x
  2. Step 2: Convert to fraction form
    159,179.56/219,675.18 = 87,558.28/x
  3. Step 3: Cross multiply
    159,179.56x = 219,675.18 × 87,558.28
  4. Step 4: Simplify right side
    159,179.56x = 19,234,380,919.49
  5. Step 5: Solve for x
    x = 19,234,380,919.49/159,179.56
  6. Step 6: Final answer
    x = 120,834.49

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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.