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Finding the Fourth Proportional to 173,028.80, 259,591.80 and 84,285.20

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Solution

The fourth proportional to 173,028.80, 259,591.80 and 84,285.20 is: 126,451.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,028.80 : 259,591.80 = 84,285.20 : x
  2. Step 2: Convert to fraction form
    173,028.80/259,591.80 = 84,285.20/x
  3. Step 3: Cross multiply
    173,028.80x = 259,591.80 × 84,285.20
  4. Step 4: Simplify right side
    173,028.80x = 21,879,746,781.36
  5. Step 5: Solve for x
    x = 21,879,746,781.36/173,028.80
  6. Step 6: Final answer
    x = 126,451.47

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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.