Home / 89,977.20-134,879.40-69,975.60

Finding the Fourth Proportional to 89,977.20, 134,879.40 and 69,975.60

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Solution

The fourth proportional to 89,977.20, 134,879.40 and 69,975.60 is: 104,896.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,977.20 : 134,879.40 = 69,975.60 : x
  2. Step 2: Convert to fraction form
    89,977.20/134,879.40 = 69,975.60/x
  3. Step 3: Cross multiply
    89,977.20x = 134,879.40 × 69,975.60
  4. Step 4: Simplify right side
    89,977.20x = 9,438,266,942.64
  5. Step 5: Solve for x
    x = 9,438,266,942.64/89,977.20
  6. Step 6: Final answer
    x = 104,896.21

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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.