Home / 185,081.36-255,412.86-100,198.76

Finding the Fourth Proportional to 185,081.36, 255,412.86 and 100,198.76

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Solution

The fourth proportional to 185,081.36, 255,412.86 and 100,198.76 is: 138,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,081.36 : 255,412.86 = 100,198.76 : x
  2. Step 2: Convert to fraction form
    185,081.36/255,412.86 = 100,198.76/x
  3. Step 3: Cross multiply
    185,081.36x = 255,412.86 × 100,198.76
  4. Step 4: Simplify right side
    185,081.36x = 25,592,051,860.05
  5. Step 5: Solve for x
    x = 25,592,051,860.05/185,081.36
  6. Step 6: Final answer
    x = 138,274.60

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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.