Home / 80,168.81-120,160.26-30,216.92

Finding the Fourth Proportional to 80,168.81, 120,160.26 and 30,216.92

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Solution

The fourth proportional to 80,168.81, 120,160.26 and 30,216.92 is: 45,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,168.81 : 120,160.26 = 30,216.92 : x
  2. Step 2: Convert to fraction form
    80,168.81/120,160.26 = 30,216.92/x
  3. Step 3: Cross multiply
    80,168.81x = 120,160.26 × 30,216.92
  4. Step 4: Simplify right side
    80,168.81x = 3,630,872,362.80
  5. Step 5: Solve for x
    x = 3,630,872,362.80/80,168.81
  6. Step 6: Final answer
    x = 45,290.34

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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.