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Finding the Fourth Proportional to 159,370.50, 219,930.92 and 87,750.56

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Solution

The fourth proportional to 159,370.50, 219,930.92 and 87,750.56 is: 121,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,370.50 : 219,930.92 = 87,750.56 : x
  2. Step 2: Convert to fraction form
    159,370.50/219,930.92 = 87,750.56/x
  3. Step 3: Cross multiply
    159,370.50x = 219,930.92 × 87,750.56
  4. Step 4: Simplify right side
    159,370.50x = 19,299,061,391.32
  5. Step 5: Solve for x
    x = 19,299,061,391.32/159,370.50
  6. Step 6: Final answer
    x = 121,095.57

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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.