Finding the Fourth Proportional to 103,415.12, 154,991.45 and 53,485.91
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Solution
The fourth proportional to 103,415.12, 154,991.45 and 53,485.91 is: 80,160.99
Step by Step Solution
- Step 1: Write the proportion equation
103,415.12 : 154,991.45 = 53,485.91 : x - Step 2: Convert to fraction form
103,415.12/154,991.45 = 53,485.91/x - Step 3: Cross multiply
103,415.12x = 154,991.45 × 53,485.91 - Step 4: Simplify right side
103,415.12x = 8,289,858,745.47 - Step 5: Solve for x
x = 8,289,858,745.47/103,415.12 - Step 6: Final answer
x = 80,160.99
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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.