Home / 185,261.70-255,661.32-100,378.77

Finding the Fourth Proportional to 185,261.70, 255,661.32 and 100,378.77

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Solution

The fourth proportional to 185,261.70, 255,661.32 and 100,378.77 is: 138,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,261.70 : 255,661.32 = 100,378.77 : x
  2. Step 2: Convert to fraction form
    185,261.70/255,661.32 = 100,378.77/x
  3. Step 3: Cross multiply
    185,261.70x = 255,661.32 × 100,378.77
  4. Step 4: Simplify right side
    185,261.70x = 25,662,967,879.45
  5. Step 5: Solve for x
    x = 25,662,967,879.45/185,261.70
  6. Step 6: Final answer
    x = 138,522.79

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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.