Home / 80,043.23-120,126.80-30,168.69

Finding the Fourth Proportional to 80,043.23, 120,126.80 and 30,168.69

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Solution

The fourth proportional to 80,043.23, 120,126.80 and 30,168.69 is: 45,276.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,043.23 : 120,126.80 = 30,168.69 : x
  2. Step 2: Convert to fraction form
    80,043.23/120,126.80 = 30,168.69/x
  3. Step 3: Cross multiply
    80,043.23x = 120,126.80 × 30,168.69
  4. Step 4: Simplify right side
    80,043.23x = 3,624,068,189.89
  5. Step 5: Solve for x
    x = 3,624,068,189.89/80,043.23
  6. Step 6: Final answer
    x = 45,276.39

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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.