Home / 203,831.20-305,732.40-70,679.20

Finding the Fourth Proportional to 203,831.20, 305,732.40 and 70,679.20

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Solution

The fourth proportional to 203,831.20, 305,732.40 and 70,679.20 is: 106,013.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,831.20 : 305,732.40 = 70,679.20 : x
  2. Step 2: Convert to fraction form
    203,831.20/305,732.40 = 70,679.20/x
  3. Step 3: Cross multiply
    203,831.20x = 305,732.40 × 70,679.20
  4. Step 4: Simplify right side
    203,831.20x = 21,608,921,446.08
  5. Step 5: Solve for x
    x = 21,608,921,446.08/203,831.20
  6. Step 6: Final answer
    x = 106,013.81

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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.