Home / 142,105.20-213,157.82-72,004.56

Finding the Fourth Proportional to 142,105.20, 213,157.82 and 72,004.56

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Solution

The fourth proportional to 142,105.20, 213,157.82 and 72,004.56 is: 108,006.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,105.20 : 213,157.82 = 72,004.56 : x
  2. Step 2: Convert to fraction form
    142,105.20/213,157.82 = 72,004.56/x
  3. Step 3: Cross multiply
    142,105.20x = 213,157.82 × 72,004.56
  4. Step 4: Simplify right side
    142,105.20x = 15,348,335,039.66
  5. Step 5: Solve for x
    x = 15,348,335,039.66/142,105.20
  6. Step 6: Final answer
    x = 108,006.85

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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.