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Finding the Fourth Proportional to 170,995.73, 256,449.65 and 80,949.65

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Solution

The fourth proportional to 170,995.73, 256,449.65 and 80,949.65 is: 121,403.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,995.73 : 256,449.65 = 80,949.65 : x
  2. Step 2: Convert to fraction form
    170,995.73/256,449.65 = 80,949.65/x
  3. Step 3: Cross multiply
    170,995.73x = 256,449.65 × 80,949.65
  4. Step 4: Simplify right side
    170,995.73x = 20,759,507,723.13
  5. Step 5: Solve for x
    x = 20,759,507,723.13/170,995.73
  6. Step 6: Final answer
    x = 121,403.67

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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.