Home / 129,936.81-194,905.23-31,440.81

Finding the Fourth Proportional to 129,936.81, 194,905.23 and 31,440.81

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Solution

The fourth proportional to 129,936.81, 194,905.23 and 31,440.81 is: 47,161.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,936.81 : 194,905.23 = 31,440.81 : x
  2. Step 2: Convert to fraction form
    129,936.81/194,905.23 = 31,440.81/x
  3. Step 3: Cross multiply
    129,936.81x = 194,905.23 × 31,440.81
  4. Step 4: Simplify right side
    129,936.81x = 6,127,978,304.44
  5. Step 5: Solve for x
    x = 6,127,978,304.44/129,936.81
  6. Step 6: Final answer
    x = 47,161.22

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1.5x scale

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.