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Finding the Fourth Proportional to 80,168.68, 120,295.68 and 45,110.80

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Solution

The fourth proportional to 80,168.68, 120,295.68 and 45,110.80 is: 67,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,168.68 : 120,295.68 = 45,110.80 : x
  2. Step 2: Convert to fraction form
    80,168.68/120,295.68 = 45,110.80/x
  3. Step 3: Cross multiply
    80,168.68x = 120,295.68 × 45,110.80
  4. Step 4: Simplify right side
    80,168.68x = 5,426,634,361.34
  5. Step 5: Solve for x
    x = 5,426,634,361.34/80,168.68
  6. Step 6: Final answer
    x = 67,690.20

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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.