Home / 185,021.48-255,329.63-100,138.54

Finding the Fourth Proportional to 185,021.48, 255,329.63 and 100,138.54

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Solution

The fourth proportional to 185,021.48, 255,329.63 and 100,138.54 is: 138,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,021.48 : 255,329.63 = 100,138.54 : x
  2. Step 2: Convert to fraction form
    185,021.48/255,329.63 = 100,138.54/x
  3. Step 3: Cross multiply
    185,021.48x = 255,329.63 × 100,138.54
  4. Step 4: Simplify right side
    185,021.48x = 25,568,336,366.94
  5. Step 5: Solve for x
    x = 25,568,336,366.94/185,021.48
  6. Step 6: Final answer
    x = 138,191.18

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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.