Home / 281,184.54-421,941.66-103,815.21

Finding the Fourth Proportional to 281,184.54, 421,941.66 and 103,815.21

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Solution

The fourth proportional to 281,184.54, 421,941.66 and 103,815.21 is: 155,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,184.54 : 421,941.66 = 103,815.21 : x
  2. Step 2: Convert to fraction form
    281,184.54/421,941.66 = 103,815.21/x
  3. Step 3: Cross multiply
    281,184.54x = 421,941.66 × 103,815.21
  4. Step 4: Simplify right side
    281,184.54x = 43,803,962,040.65
  5. Step 5: Solve for x
    x = 43,803,962,040.65/281,184.54
  6. Step 6: Final answer
    x = 155,783.68

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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.