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Finding the Fourth Proportional to 159,370.93, 219,930.01 and 87,749.38

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Solution

The fourth proportional to 159,370.93, 219,930.01 and 87,749.38 is: 121,093.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,370.93 : 219,930.01 = 87,749.38 : x
  2. Step 2: Convert to fraction form
    159,370.93/219,930.01 = 87,749.38/x
  3. Step 3: Cross multiply
    159,370.93x = 219,930.01 × 87,749.38
  4. Step 4: Simplify right side
    159,370.93x = 19,298,722,020.89
  5. Step 5: Solve for x
    x = 19,298,722,020.89/159,370.93
  6. Step 6: Final answer
    x = 121,093.11

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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.