Finding the Fourth Proportional to 80,173.68, 120,303.18 and 45,115.80
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Solution
The fourth proportional to 80,173.68, 120,303.18 and 45,115.80 is: 67,697.71
Step by Step Solution
- Step 1: Write the proportion equation
80,173.68 : 120,303.18 = 45,115.80 : x - Step 2: Convert to fraction form
80,173.68/120,303.18 = 45,115.80/x - Step 3: Cross multiply
80,173.68x = 120,303.18 × 45,115.80 - Step 4: Simplify right side
80,173.68x = 5,427,574,208.24 - Step 5: Solve for x
x = 5,427,574,208.24/80,173.68 - Step 6: Final answer
x = 67,697.71
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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.