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Finding the Fourth Proportional to 159,166.92, 219,653.86 and 87,550.57

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Solution

The fourth proportional to 159,166.92, 219,653.86 and 87,550.57 is: 120,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,166.92 : 219,653.86 = 87,550.57 : x
  2. Step 2: Convert to fraction form
    159,166.92/219,653.86 = 87,550.57/x
  3. Step 3: Cross multiply
    159,166.92x = 219,653.86 × 87,550.57
  4. Step 4: Simplify right side
    159,166.92x = 19,230,819,547.43
  5. Step 5: Solve for x
    x = 19,230,819,547.43/159,166.92
  6. Step 6: Final answer
    x = 120,821.71

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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.