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Finding the Fourth Proportional to 173,879.70, 260,819.55 and 80,567.70

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Solution

The fourth proportional to 173,879.70, 260,819.55 and 80,567.70 is: 120,851.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,879.70 : 260,819.55 = 80,567.70 : x
  2. Step 2: Convert to fraction form
    173,879.70/260,819.55 = 80,567.70/x
  3. Step 3: Cross multiply
    173,879.70x = 260,819.55 × 80,567.70
  4. Step 4: Simplify right side
    173,879.70x = 21,013,631,258.54
  5. Step 5: Solve for x
    x = 21,013,631,258.54/173,879.70
  6. Step 6: Final answer
    x = 120,851.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.