Home / 202,138.07-278,951.78-111,496.43

Finding the Fourth Proportional to 202,138.07, 278,951.78 and 111,496.43

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Solution

The fourth proportional to 202,138.07, 278,951.78 and 111,496.43 is: 153,865.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,138.07 : 278,951.78 = 111,496.43 : x
  2. Step 2: Convert to fraction form
    202,138.07/278,951.78 = 111,496.43/x
  3. Step 3: Cross multiply
    202,138.07x = 278,951.78 × 111,496.43
  4. Step 4: Simplify right side
    202,138.07x = 31,102,128,588.27
  5. Step 5: Solve for x
    x = 31,102,128,588.27/202,138.07
  6. Step 6: Final answer
    x = 153,865.77

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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.