Home / 143,868.47-198,475.49-137,198.12

Finding the Fourth Proportional to 143,868.47, 198,475.49 and 137,198.12

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Solution

The fourth proportional to 143,868.47, 198,475.49 and 137,198.12 is: 189,273.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,868.47 : 198,475.49 = 137,198.12 : x
  2. Step 2: Convert to fraction form
    143,868.47/198,475.49 = 137,198.12/x
  3. Step 3: Cross multiply
    143,868.47x = 198,475.49 × 137,198.12
  4. Step 4: Simplify right side
    143,868.47x = 27,230,464,094.08
  5. Step 5: Solve for x
    x = 27,230,464,094.08/143,868.47
  6. Step 6: Final answer
    x = 189,273.33

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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.