Finding the Fourth Proportional to 120,661.74, 166,528.44 and 79,303.68
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Solution
The fourth proportional to 120,661.74, 166,528.44 and 79,303.68 is: 109,449.09
Step by Step Solution
- Step 1: Write the proportion equation
120,661.74 : 166,528.44 = 79,303.68 : x - Step 2: Convert to fraction form
120,661.74/166,528.44 = 79,303.68/x - Step 3: Cross multiply
120,661.74x = 166,528.44 × 79,303.68 - Step 4: Simplify right side
120,661.74x = 13,206,318,116.66 - Step 5: Solve for x
x = 13,206,318,116.66/120,661.74 - Step 6: Final answer
x = 109,449.09
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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.