Home / 281,310.12-421,919.68-103,900.68

Finding the Fourth Proportional to 281,310.12, 421,919.68 and 103,900.68

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Solution

The fourth proportional to 281,310.12, 421,919.68 and 103,900.68 is: 155,834.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,310.12 : 421,919.68 = 103,900.68 : x
  2. Step 2: Convert to fraction form
    281,310.12/421,919.68 = 103,900.68/x
  3. Step 3: Cross multiply
    281,310.12x = 421,919.68 × 103,900.68
  4. Step 4: Simplify right side
    281,310.12x = 43,837,741,657.38
  5. Step 5: Solve for x
    x = 43,837,741,657.38/281,310.12
  6. Step 6: Final answer
    x = 155,834.21

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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.