Finding the Fourth Proportional to 120,917.19, 166,871.37 and 67,203.09
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Solution
The fourth proportional to 120,917.19, 166,871.37 and 67,203.09 is: 92,743.40
Step by Step Solution
- Step 1: Write the proportion equation
120,917.19 : 166,871.37 = 67,203.09 : x - Step 2: Convert to fraction form
120,917.19/166,871.37 = 67,203.09/x - Step 3: Cross multiply
120,917.19x = 166,871.37 × 67,203.09 - Step 4: Simplify right side
120,917.19x = 11,214,271,696.53 - Step 5: Solve for x
x = 11,214,271,696.53/120,917.19 - Step 6: Final answer
x = 92,743.40
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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.