Finding the Fourth Proportional to 120,043.08, 165,693.97 and 79,236.99
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Solution
The fourth proportional to 120,043.08, 165,693.97 and 79,236.99 is: 109,369.83
Step by Step Solution
- Step 1: Write the proportion equation
120,043.08 : 165,693.97 = 79,236.99 : x - Step 2: Convert to fraction form
120,043.08/165,693.97 = 79,236.99/x - Step 3: Cross multiply
120,043.08x = 165,693.97 × 79,236.99 - Step 4: Simplify right side
120,043.08x = 13,129,091,543.00 - Step 5: Solve for x
x = 13,129,091,543.00/120,043.08 - Step 6: Final answer
x = 109,369.83
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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.