Home / 154,318.53-212,912.33-100,583.94

Finding the Fourth Proportional to 154,318.53, 212,912.33 and 100,583.94

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Solution

The fourth proportional to 154,318.53, 212,912.33 and 100,583.94 is: 138,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,318.53 : 212,912.33 = 100,583.94 : x
  2. Step 2: Convert to fraction form
    154,318.53/212,912.33 = 100,583.94/x
  3. Step 3: Cross multiply
    154,318.53x = 212,912.33 × 100,583.94
  4. Step 4: Simplify right side
    154,318.53x = 21,415,561,025.98
  5. Step 5: Solve for x
    x = 21,415,561,025.98/154,318.53
  6. Step 6: Final answer
    x = 138,775.05

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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.