Home / 185,261.58-255,661.20-100,378.64

Finding the Fourth Proportional to 185,261.58, 255,661.20 and 100,378.64

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Solution

The fourth proportional to 185,261.58, 255,661.20 and 100,378.64 is: 138,522.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,261.58 : 255,661.20 = 100,378.64 : x
  2. Step 2: Convert to fraction form
    185,261.58/255,661.20 = 100,378.64/x
  3. Step 3: Cross multiply
    185,261.58x = 255,661.20 × 100,378.64
  4. Step 4: Simplify right side
    185,261.58x = 25,662,923,556.77
  5. Step 5: Solve for x
    x = 25,662,923,556.77/185,261.58
  6. Step 6: Final answer
    x = 138,522.64

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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.