Home / 145,511.21-200,804.01-80,979.37

Finding the Fourth Proportional to 145,511.21, 200,804.01 and 80,979.37

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Solution

The fourth proportional to 145,511.21, 200,804.01 and 80,979.37 is: 111,750.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,511.21 : 200,804.01 = 80,979.37 : x
  2. Step 2: Convert to fraction form
    145,511.21/200,804.01 = 80,979.37/x
  3. Step 3: Cross multiply
    145,511.21x = 200,804.01 × 80,979.37
  4. Step 4: Simplify right side
    145,511.21x = 16,260,981,219.25
  5. Step 5: Solve for x
    x = 16,260,981,219.25/145,511.21
  6. Step 6: Final answer
    x = 111,750.71

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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.