Home / 188,918.92-260,743.80-108,399.07

Finding the Fourth Proportional to 188,918.92, 260,743.80 and 108,399.07

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Solution

The fourth proportional to 188,918.92, 260,743.80 and 108,399.07 is: 149,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,918.92 : 260,743.80 = 108,399.07 : x
  2. Step 2: Convert to fraction form
    188,918.92/260,743.80 = 108,399.07/x
  3. Step 3: Cross multiply
    188,918.92x = 260,743.80 × 108,399.07
  4. Step 4: Simplify right side
    188,918.92x = 28,264,385,428.27
  5. Step 5: Solve for x
    x = 28,264,385,428.27/188,918.92
  6. Step 6: Final answer
    x = 149,611.20

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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.