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Finding the Fourth Proportional to 207,003.43, 310,505.13 and 66,762.06

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Solution

The fourth proportional to 207,003.43, 310,505.13 and 66,762.06 is: 100,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,003.43 : 310,505.13 = 66,762.06 : x
  2. Step 2: Convert to fraction form
    207,003.43/310,505.13 = 66,762.06/x
  3. Step 3: Cross multiply
    207,003.43x = 310,505.13 × 66,762.06
  4. Step 4: Simplify right side
    207,003.43x = 20,729,962,119.37
  5. Step 5: Solve for x
    x = 20,729,962,119.37/207,003.43
  6. Step 6: Final answer
    x = 100,143.09

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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.