Home / 154,183.50-212,773.23-87,115.50

Finding the Fourth Proportional to 154,183.50, 212,773.23 and 87,115.50

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Solution

The fourth proportional to 154,183.50, 212,773.23 and 87,115.50 is: 120,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,183.50 : 212,773.23 = 87,115.50 : x
  2. Step 2: Convert to fraction form
    154,183.50/212,773.23 = 87,115.50/x
  3. Step 3: Cross multiply
    154,183.50x = 212,773.23 × 87,115.50
  4. Step 4: Simplify right side
    154,183.50x = 18,535,846,318.07
  5. Step 5: Solve for x
    x = 18,535,846,318.07/154,183.50
  6. Step 6: Final answer
    x = 120,219.39

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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.