Finding the Fourth Proportional to 120,721.05, 166,620.78 and 69,742.08
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Solution
The fourth proportional to 120,721.05, 166,620.78 and 69,742.08 is: 96,258.94
Step by Step Solution
- Step 1: Write the proportion equation
120,721.05 : 166,620.78 = 69,742.08 : x - Step 2: Convert to fraction form
120,721.05/166,620.78 = 69,742.08/x - Step 3: Cross multiply
120,721.05x = 166,620.78 × 69,742.08 - Step 4: Simplify right side
120,721.05x = 11,620,479,768.42 - Step 5: Solve for x
x = 11,620,479,768.42/120,721.05 - Step 6: Final answer
x = 96,258.94
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.