Home / 200,112.98-300,020.43-121,208.18

Finding the Fourth Proportional to 200,112.98, 300,020.43 and 121,208.18

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Solution

The fourth proportional to 200,112.98, 300,020.43 and 121,208.18 is: 181,722.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,112.98 : 300,020.43 = 121,208.18 : x
  2. Step 2: Convert to fraction form
    200,112.98/300,020.43 = 121,208.18/x
  3. Step 3: Cross multiply
    200,112.98x = 300,020.43 × 121,208.18
  4. Step 4: Simplify right side
    200,112.98x = 36,364,930,283.12
  5. Step 5: Solve for x
    x = 36,364,930,283.12/200,112.98
  6. Step 6: Final answer
    x = 181,722.00

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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.