Home / 80,109.65-120,172.62-27,512.30

Finding the Fourth Proportional to 80,109.65, 120,172.62 and 27,512.30

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Solution

The fourth proportional to 80,109.65, 120,172.62 and 27,512.30 is: 41,271.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,109.65 : 120,172.62 = 27,512.30 : x
  2. Step 2: Convert to fraction form
    80,109.65/120,172.62 = 27,512.30/x
  3. Step 3: Cross multiply
    80,109.65x = 120,172.62 × 27,512.30
  4. Step 4: Simplify right side
    80,109.65x = 3,306,225,173.23
  5. Step 5: Solve for x
    x = 3,306,225,173.23/80,109.65
  6. Step 6: Final answer
    x = 41,271.25

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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.