Home / 142,102.05-213,293.21-75,542.73

Finding the Fourth Proportional to 142,102.05, 213,293.21 and 75,542.73

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Solution

The fourth proportional to 142,102.05, 213,293.21 and 75,542.73 is: 113,388.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,102.05 : 213,293.21 = 75,542.73 : x
  2. Step 2: Convert to fraction form
    142,102.05/213,293.21 = 75,542.73/x
  3. Step 3: Cross multiply
    142,102.05x = 213,293.21 × 75,542.73
  4. Step 4: Simplify right side
    142,102.05x = 16,112,750,996.15
  5. Step 5: Solve for x
    x = 16,112,750,996.15/142,102.05
  6. Step 6: Final answer
    x = 113,388.59

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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.