Home / 86,930.26-130,161.78-55,168.36

Finding the Fourth Proportional to 86,930.26, 130,161.78 and 55,168.36

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Solution

The fourth proportional to 86,930.26, 130,161.78 and 55,168.36 is: 82,604.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,930.26 : 130,161.78 = 55,168.36 : x
  2. Step 2: Convert to fraction form
    86,930.26/130,161.78 = 55,168.36/x
  3. Step 3: Cross multiply
    86,930.26x = 130,161.78 × 55,168.36
  4. Step 4: Simplify right side
    86,930.26x = 7,180,811,937.28
  5. Step 5: Solve for x
    x = 7,180,811,937.28/86,930.26
  6. Step 6: Final answer
    x = 82,604.28

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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.