Home / 185,128.75-255,477.81-100,245.88

Finding the Fourth Proportional to 185,128.75, 255,477.81 and 100,245.88

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Solution

The fourth proportional to 185,128.75, 255,477.81 and 100,245.88 is: 138,339.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,128.75 : 255,477.81 = 100,245.88 : x
  2. Step 2: Convert to fraction form
    185,128.75/255,477.81 = 100,245.88/x
  3. Step 3: Cross multiply
    185,128.75x = 255,477.81 × 100,245.88
  4. Step 4: Simplify right side
    185,128.75x = 25,610,597,883.92
  5. Step 5: Solve for x
    x = 25,610,597,883.92/185,128.75
  6. Step 6: Final answer
    x = 138,339.39

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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.