Finding the Fourth Proportional to 129,956.40, 177,993.93 and 122,295.07
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Solution
The fourth proportional to 129,956.40, 177,993.93 and 122,295.07 is: 167,500.63
Step by Step Solution
- Step 1: Write the proportion equation
129,956.40 : 177,993.93 = 122,295.07 : x - Step 2: Convert to fraction form
129,956.40/177,993.93 = 122,295.07/x - Step 3: Cross multiply
129,956.40x = 177,993.93 × 122,295.07 - Step 4: Simplify right side
129,956.40x = 21,767,779,464.85 - Step 5: Solve for x
x = 21,767,779,464.85/129,956.40 - Step 6: Final answer
x = 167,500.63
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.