Home / 80,079.04-120,099.92-30,164.16

Finding the Fourth Proportional to 80,079.04, 120,099.92 and 30,164.16

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Solution

The fourth proportional to 80,079.04, 120,099.92 and 30,164.16 is: 45,239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,079.04 : 120,099.92 = 30,164.16 : x
  2. Step 2: Convert to fraction form
    80,079.04/120,099.92 = 30,164.16/x
  3. Step 3: Cross multiply
    80,079.04x = 120,099.92 × 30,164.16
  4. Step 4: Simplify right side
    80,079.04x = 3,622,713,202.87
  5. Step 5: Solve for x
    x = 3,622,713,202.87/80,079.04
  6. Step 6: Final answer
    x = 45,239.22

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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.