Home / 130,414.82-179,960-103,622.18

Finding the Fourth Proportional to 130,414.82, 179,960 and 103,622.18

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Solution

The fourth proportional to 130,414.82, 179,960 and 103,622.18 is: 142,988.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,414.82 : 179,960 = 103,622.18 : x
  2. Step 2: Convert to fraction form
    130,414.82/179,960 = 103,622.18/x
  3. Step 3: Cross multiply
    130,414.82x = 179,960 × 103,622.18
  4. Step 4: Simplify right side
    130,414.82x = 18,647,847,512.80
  5. Step 5: Solve for x
    x = 18,647,847,512.80/130,414.82
  6. Step 6: Final answer
    x = 142,988.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.