Finding the Fourth Proportional to 135,307.20, 202,960.80 and 36,811.20
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Solution
The fourth proportional to 135,307.20, 202,960.80 and 36,811.20 is: 55,216.80
Step by Step Solution
- Step 1: Write the proportion equation
135,307.20 : 202,960.80 = 36,811.20 : x - Step 2: Convert to fraction form
135,307.20/202,960.80 = 36,811.20/x - Step 3: Cross multiply
135,307.20x = 202,960.80 × 36,811.20 - Step 4: Simplify right side
135,307.20x = 7,471,230,600.96 - Step 5: Solve for x
x = 7,471,230,600.96/135,307.20 - Step 6: Final answer
x = 55,216.80
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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.