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Finding the Fourth Proportional to 159,216.66, 219,724.38 and 87,599.70

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Solution

The fourth proportional to 159,216.66, 219,724.38 and 87,599.70 is: 120,890.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,216.66 : 219,724.38 = 87,599.70 : x
  2. Step 2: Convert to fraction form
    159,216.66/219,724.38 = 87,599.70/x
  3. Step 3: Cross multiply
    159,216.66x = 219,724.38 × 87,599.70
  4. Step 4: Simplify right side
    159,216.66x = 19,247,789,770.69
  5. Step 5: Solve for x
    x = 19,247,789,770.69/159,216.66
  6. Step 6: Final answer
    x = 120,890.55

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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.