Home / 281,111.34-421,723.35-103,619.10

Finding the Fourth Proportional to 281,111.34, 421,723.35 and 103,619.10

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Solution

The fourth proportional to 281,111.34, 421,723.35 and 103,619.10 is: 155,449.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,111.34 : 421,723.35 = 103,619.10 : x
  2. Step 2: Convert to fraction form
    281,111.34/421,723.35 = 103,619.10/x
  3. Step 3: Cross multiply
    281,111.34x = 421,723.35 × 103,619.10
  4. Step 4: Simplify right side
    281,111.34x = 43,698,593,975.99
  5. Step 5: Solve for x
    x = 43,698,593,975.99/281,111.34
  6. Step 6: Final answer
    x = 155,449.42

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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.