Home / 142,831.44-197,105.40-82,402.20

Finding the Fourth Proportional to 142,831.44, 197,105.40 and 82,402.20

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Solution

The fourth proportional to 142,831.44, 197,105.40 and 82,402.20 is: 113,713.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,831.44 : 197,105.40 = 82,402.20 : x
  2. Step 2: Convert to fraction form
    142,831.44/197,105.40 = 82,402.20/x
  3. Step 3: Cross multiply
    142,831.44x = 197,105.40 × 82,402.20
  4. Step 4: Simplify right side
    142,831.44x = 16,241,918,591.88
  5. Step 5: Solve for x
    x = 16,241,918,591.88/142,831.44
  6. Step 6: Final answer
    x = 113,713.89

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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.