Finding the Fourth Proportional to 120,485.78, 166,271.36 and 66,771.68
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Solution
The fourth proportional to 120,485.78, 166,271.36 and 66,771.68 is: 92,145.46
Step by Step Solution
- Step 1: Write the proportion equation
120,485.78 : 166,271.36 = 66,771.68 : x - Step 2: Convert to fraction form
120,485.78/166,271.36 = 66,771.68/x - Step 3: Cross multiply
120,485.78x = 166,271.36 × 66,771.68 - Step 4: Simplify right side
120,485.78x = 11,102,216,877.87 - Step 5: Solve for x
x = 11,102,216,877.87/120,485.78 - Step 6: Final answer
x = 92,145.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.