Home / 281,107.76-421,827.96-103,738.28

Finding the Fourth Proportional to 281,107.76, 421,827.96 and 103,738.28

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Solution

The fourth proportional to 281,107.76, 421,827.96 and 103,738.28 is: 155,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,107.76 : 421,827.96 = 103,738.28 : x
  2. Step 2: Convert to fraction form
    281,107.76/421,827.96 = 103,738.28/x
  3. Step 3: Cross multiply
    281,107.76x = 421,827.96 × 103,738.28
  4. Step 4: Simplify right side
    281,107.76x = 43,759,707,026.31
  5. Step 5: Solve for x
    x = 43,759,707,026.31/281,107.76
  6. Step 6: Final answer
    x = 155,668.80

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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.