Home / 185,261.24-255,659.64-100,378.28

Finding the Fourth Proportional to 185,261.24, 255,659.64 and 100,378.28

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Solution

The fourth proportional to 185,261.24, 255,659.64 and 100,378.28 is: 138,521.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,261.24 : 255,659.64 = 100,378.28 : x
  2. Step 2: Convert to fraction form
    185,261.24/255,659.64 = 100,378.28/x
  3. Step 3: Cross multiply
    185,261.24x = 255,659.64 × 100,378.28
  4. Step 4: Simplify right side
    185,261.24x = 25,662,674,928.62
  5. Step 5: Solve for x
    x = 25,662,674,928.62/185,261.24
  6. Step 6: Final answer
    x = 138,521.55

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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.