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Finding the Fourth Proportional to 159,102, 219,555.14 and 87,481.52

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Solution

The fourth proportional to 159,102, 219,555.14 and 87,481.52 is: 120,721.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,102 : 219,555.14 = 87,481.52 : x
  2. Step 2: Convert to fraction form
    159,102/219,555.14 = 87,481.52/x
  3. Step 3: Cross multiply
    159,102x = 219,555.14 × 87,481.52
  4. Step 4: Simplify right side
    159,102x = 19,207,017,371.01
  5. Step 5: Solve for x
    x = 19,207,017,371.01/159,102
  6. Step 6: Final answer
    x = 120,721.41

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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.