Home / 185,261.69-255,661.19-100,378.76

Finding the Fourth Proportional to 185,261.69, 255,661.19 and 100,378.76

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Solution

The fourth proportional to 185,261.69, 255,661.19 and 100,378.76 is: 138,522.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,261.69 : 255,661.19 = 100,378.76 : x
  2. Step 2: Convert to fraction form
    185,261.69/255,661.19 = 100,378.76/x
  3. Step 3: Cross multiply
    185,261.69x = 255,661.19 × 100,378.76
  4. Step 4: Simplify right side
    185,261.69x = 25,662,951,452.12
  5. Step 5: Solve for x
    x = 25,662,951,452.12/185,261.69
  6. Step 6: Final answer
    x = 138,522.71

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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.