Home / 445,557.53-668,375.56-125,712.20

Finding the Fourth Proportional to 445,557.53, 668,375.56 and 125,712.20

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Solution

The fourth proportional to 445,557.53, 668,375.56 and 125,712.20 is: 188,579.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,557.53 : 668,375.56 = 125,712.20 : x
  2. Step 2: Convert to fraction form
    445,557.53/668,375.56 = 125,712.20/x
  3. Step 3: Cross multiply
    445,557.53x = 668,375.56 × 125,712.20
  4. Step 4: Simplify right side
    445,557.53x = 84,022,958,731.95
  5. Step 5: Solve for x
    x = 84,022,958,731.95/445,557.53
  6. Step 6: Final answer
    x = 188,579.37

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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.