Home / 201,020.40-301,093.20-121,996.80

Finding the Fourth Proportional to 201,020.40, 301,093.20 and 121,996.80

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Solution

The fourth proportional to 201,020.40, 301,093.20 and 121,996.80 is: 182,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,020.40 : 301,093.20 = 121,996.80 : x
  2. Step 2: Convert to fraction form
    201,020.40/301,093.20 = 121,996.80/x
  3. Step 3: Cross multiply
    201,020.40x = 301,093.20 × 121,996.80
  4. Step 4: Simplify right side
    201,020.40x = 36,732,406,901.76
  5. Step 5: Solve for x
    x = 36,732,406,901.76/201,020.40
  6. Step 6: Final answer
    x = 182,729.75

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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.