Home / 129,540.36-194,317.51-40,800.81

Finding the Fourth Proportional to 129,540.36, 194,317.51 and 40,800.81

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Solution

The fourth proportional to 129,540.36, 194,317.51 and 40,800.81 is: 61,203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,540.36 : 194,317.51 = 40,800.81 : x
  2. Step 2: Convert to fraction form
    129,540.36/194,317.51 = 40,800.81/x
  3. Step 3: Cross multiply
    129,540.36x = 194,317.51 × 40,800.81
  4. Step 4: Simplify right side
    129,540.36x = 7,928,311,805.18
  5. Step 5: Solve for x
    x = 7,928,311,805.18/129,540.36
  6. Step 6: Final answer
    x = 61,203.41

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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.