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Finding the Fourth Proportional to 207,360.81, 311,090.67 and 67,119.48

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Solution

The fourth proportional to 207,360.81, 311,090.67 and 67,119.48 is: 100,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,360.81 : 311,090.67 = 67,119.48 : x
  2. Step 2: Convert to fraction form
    207,360.81/311,090.67 = 67,119.48/x
  3. Step 3: Cross multiply
    207,360.81x = 311,090.67 × 67,119.48
  4. Step 4: Simplify right side
    207,360.81x = 20,880,244,003.25
  5. Step 5: Solve for x
    x = 20,880,244,003.25/207,360.81
  6. Step 6: Final answer
    x = 100,695.23

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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.