Finding the Fourth Proportional to 80,419.62, 120,708.36 and 67,177.67
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Solution
The fourth proportional to 80,419.62, 120,708.36 and 67,177.67 is: 100,832.45
Step by Step Solution
- Step 1: Write the proportion equation
80,419.62 : 120,708.36 = 67,177.67 : x - Step 2: Convert to fraction form
80,419.62/120,708.36 = 67,177.67/x - Step 3: Cross multiply
80,419.62x = 120,708.36 × 67,177.67 - Step 4: Simplify right side
80,419.62x = 8,108,907,242.41 - Step 5: Solve for x
x = 8,108,907,242.41/80,419.62 - Step 6: Final answer
x = 100,832.45
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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.