Home / 217,621.54-300,242.73-122,114.98

Finding the Fourth Proportional to 217,621.54, 300,242.73 and 122,114.98

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Solution

The fourth proportional to 217,621.54, 300,242.73 and 122,114.98 is: 168,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,621.54 : 300,242.73 = 122,114.98 : x
  2. Step 2: Convert to fraction form
    217,621.54/300,242.73 = 122,114.98/x
  3. Step 3: Cross multiply
    217,621.54x = 300,242.73 × 122,114.98
  4. Step 4: Simplify right side
    217,621.54x = 36,664,134,969.10
  5. Step 5: Solve for x
    x = 36,664,134,969.10/217,621.54
  6. Step 6: Final answer
    x = 168,476.59

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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.