Home / 131,619.80-197,429.70-103,626.20

Finding the Fourth Proportional to 131,619.80, 197,429.70 and 103,626.20

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Solution

The fourth proportional to 131,619.80, 197,429.70 and 103,626.20 is: 155,439.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,619.80 : 197,429.70 = 103,626.20 : x
  2. Step 2: Convert to fraction form
    131,619.80/197,429.70 = 103,626.20/x
  3. Step 3: Cross multiply
    131,619.80x = 197,429.70 × 103,626.20
  4. Step 4: Simplify right side
    131,619.80x = 20,458,889,578.14
  5. Step 5: Solve for x
    x = 20,458,889,578.14/131,619.80
  6. Step 6: Final answer
    x = 155,439.30

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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.