Finding the Fourth Proportional to 120,471.36, 165,982.84 and 79,562.84
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Solution
The fourth proportional to 120,471.36, 165,982.84 and 79,562.84 is: 109,619.96
Step by Step Solution
- Step 1: Write the proportion equation
120,471.36 : 165,982.84 = 79,562.84 : x - Step 2: Convert to fraction form
120,471.36/165,982.84 = 79,562.84/x - Step 3: Cross multiply
120,471.36x = 165,982.84 × 79,562.84 - Step 4: Simplify right side
120,471.36x = 13,206,065,112.84 - Step 5: Solve for x
x = 13,206,065,112.84/120,471.36 - Step 6: Final answer
x = 109,619.96
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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.