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Finding the Fourth Proportional to 207,361.37, 311,163.02 and 87,411.02

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Solution

The fourth proportional to 207,361.37, 311,163.02 and 87,411.02 is: 131,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,361.37 : 311,163.02 = 87,411.02 : x
  2. Step 2: Convert to fraction form
    207,361.37/311,163.02 = 87,411.02/x
  3. Step 3: Cross multiply
    207,361.37x = 311,163.02 × 87,411.02
  4. Step 4: Simplify right side
    207,361.37x = 27,199,077,924.84
  5. Step 5: Solve for x
    x = 27,199,077,924.84/207,361.37
  6. Step 6: Final answer
    x = 131,167.53

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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.