Home / 199,918.78-299,729.94-121,015.06

Finding the Fourth Proportional to 199,918.78, 299,729.94 and 121,015.06

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Solution

The fourth proportional to 199,918.78, 299,729.94 and 121,015.06 is: 181,432.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,918.78 : 299,729.94 = 121,015.06 : x
  2. Step 2: Convert to fraction form
    199,918.78/299,729.94 = 121,015.06/x
  3. Step 3: Cross multiply
    199,918.78x = 299,729.94 × 121,015.06
  4. Step 4: Simplify right side
    199,918.78x = 36,271,836,672.90
  5. Step 5: Solve for x
    x = 36,271,836,672.90/199,918.78
  6. Step 6: Final answer
    x = 181,432.86

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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.