Home / 217,664.55-300,360.60-122,152.79

Finding the Fourth Proportional to 217,664.55, 300,360.60 and 122,152.79

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Solution

The fourth proportional to 217,664.55, 300,360.60 and 122,152.79 is: 168,561.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,664.55 : 300,360.60 = 122,152.79 : x
  2. Step 2: Convert to fraction form
    217,664.55/300,360.60 = 122,152.79/x
  3. Step 3: Cross multiply
    217,664.55x = 300,360.60 × 122,152.79
  4. Step 4: Simplify right side
    217,664.55x = 36,689,886,046.98
  5. Step 5: Solve for x
    x = 36,689,886,046.98/217,664.55
  6. Step 6: Final answer
    x = 168,561.61

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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.