Home / 185,121.45-255,468.60-100,238.45

Finding the Fourth Proportional to 185,121.45, 255,468.60 and 100,238.45

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Solution

The fourth proportional to 185,121.45, 255,468.60 and 100,238.45 is: 138,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,121.45 : 255,468.60 = 100,238.45 : x
  2. Step 2: Convert to fraction form
    185,121.45/255,468.60 = 100,238.45/x
  3. Step 3: Cross multiply
    185,121.45x = 255,468.60 × 100,238.45
  4. Step 4: Simplify right side
    185,121.45x = 25,607,775,210.33
  5. Step 5: Solve for x
    x = 25,607,775,210.33/185,121.45
  6. Step 6: Final answer
    x = 138,329.60

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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.