Home / 219,912.90-329,967.76-126,418.65

Finding the Fourth Proportional to 219,912.90, 329,967.76 and 126,418.65

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Solution

The fourth proportional to 219,912.90, 329,967.76 and 126,418.65 is: 189,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,912.90 : 329,967.76 = 126,418.65 : x
  2. Step 2: Convert to fraction form
    219,912.90/329,967.76 = 126,418.65/x
  3. Step 3: Cross multiply
    219,912.90x = 329,967.76 × 126,418.65
  4. Step 4: Simplify right side
    219,912.90x = 41,714,078,762.72
  5. Step 5: Solve for x
    x = 41,714,078,762.72/219,912.90
  6. Step 6: Final answer
    x = 189,684.55

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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.