Home / 185,243.12-255,635.75-100,360.18

Finding the Fourth Proportional to 185,243.12, 255,635.75 and 100,360.18

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Solution

The fourth proportional to 185,243.12, 255,635.75 and 100,360.18 is: 138,497.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,243.12 : 255,635.75 = 100,360.18 : x
  2. Step 2: Convert to fraction form
    185,243.12/255,635.75 = 100,360.18/x
  3. Step 3: Cross multiply
    185,243.12x = 255,635.75 × 100,360.18
  4. Step 4: Simplify right side
    185,243.12x = 25,655,649,245.35
  5. Step 5: Solve for x
    x = 25,655,649,245.35/185,243.12
  6. Step 6: Final answer
    x = 138,497.18

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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.