Home / 204,039.20-305,840.10-77,630.60

Finding the Fourth Proportional to 204,039.20, 305,840.10 and 77,630.60

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Solution

The fourth proportional to 204,039.20, 305,840.10 and 77,630.60 is: 116,362.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,039.20 : 305,840.10 = 77,630.60 : x
  2. Step 2: Convert to fraction form
    204,039.20/305,840.10 = 77,630.60/x
  3. Step 3: Cross multiply
    204,039.20x = 305,840.10 × 77,630.60
  4. Step 4: Simplify right side
    204,039.20x = 23,742,550,467.06
  5. Step 5: Solve for x
    x = 23,742,550,467.06/204,039.20
  6. Step 6: Final answer
    x = 116,362.69

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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.