Home / 129,936.94-194,905.42-31,440.94

Finding the Fourth Proportional to 129,936.94, 194,905.42 and 31,440.94

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Solution

The fourth proportional to 129,936.94, 194,905.42 and 31,440.94 is: 47,161.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,936.94 : 194,905.42 = 31,440.94 : x
  2. Step 2: Convert to fraction form
    129,936.94/194,905.42 = 31,440.94/x
  3. Step 3: Cross multiply
    129,936.94x = 194,905.42 × 31,440.94
  4. Step 4: Simplify right side
    129,936.94x = 6,128,009,050.03
  5. Step 5: Solve for x
    x = 6,128,009,050.03/129,936.94
  6. Step 6: Final answer
    x = 47,161.41

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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.