Home / 203,939.63-305,831.34-67,130.63

Finding the Fourth Proportional to 203,939.63, 305,831.34 and 67,130.63

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Solution

The fourth proportional to 203,939.63, 305,831.34 and 67,130.63 is: 100,670.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,939.63 : 305,831.34 = 67,130.63 : x
  2. Step 2: Convert to fraction form
    203,939.63/305,831.34 = 67,130.63/x
  3. Step 3: Cross multiply
    203,939.63x = 305,831.34 × 67,130.63
  4. Step 4: Simplify right side
    203,939.63x = 20,530,648,998.79
  5. Step 5: Solve for x
    x = 20,530,648,998.79/203,939.63
  6. Step 6: Final answer
    x = 100,670.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.