Home / 89,144.58-133,716.90-66,678.54

Finding the Fourth Proportional to 89,144.58, 133,716.90 and 66,678.54

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Solution

The fourth proportional to 89,144.58, 133,716.90 and 66,678.54 is: 100,017.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,144.58 : 133,716.90 = 66,678.54 : x
  2. Step 2: Convert to fraction form
    89,144.58/133,716.90 = 66,678.54/x
  3. Step 3: Cross multiply
    89,144.58x = 133,716.90 × 66,678.54
  4. Step 4: Simplify right side
    89,144.58x = 8,916,047,665.33
  5. Step 5: Solve for x
    x = 8,916,047,665.33/89,144.58
  6. Step 6: Final answer
    x = 100,017.83

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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.