Home / 74,120.96-111,181.76-18,716.96

Finding the Fourth Proportional to 74,120.96, 111,181.76 and 18,716.96

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Solution

The fourth proportional to 74,120.96, 111,181.76 and 18,716.96 is: 28,075.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,120.96 : 111,181.76 = 18,716.96 : x
  2. Step 2: Convert to fraction form
    74,120.96/111,181.76 = 18,716.96/x
  3. Step 3: Cross multiply
    74,120.96x = 111,181.76 × 18,716.96
  4. Step 4: Simplify right side
    74,120.96x = 2,080,984,554.65
  5. Step 5: Solve for x
    x = 2,080,984,554.65/74,120.96
  6. Step 6: Final answer
    x = 28,075.52

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1.5x scale

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.