Home / 202,163.10-278,979.03-112,739.10

Finding the Fourth Proportional to 202,163.10, 278,979.03 and 112,739.10

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Solution

The fourth proportional to 202,163.10, 278,979.03 and 112,739.10 is: 155,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,163.10 : 278,979.03 = 112,739.10 : x
  2. Step 2: Convert to fraction form
    202,163.10/278,979.03 = 112,739.10/x
  3. Step 3: Cross multiply
    202,163.10x = 278,979.03 × 112,739.10
  4. Step 4: Simplify right side
    202,163.10x = 31,451,844,761.07
  5. Step 5: Solve for x
    x = 31,451,844,761.07/202,163.10
  6. Step 6: Final answer
    x = 155,576.59

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1.5x scale

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.