Finding the Fourth Proportional to 121,265.20, 167,415.35 and 80,484.63
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Solution
The fourth proportional to 121,265.20, 167,415.35 and 80,484.63 is: 111,114.83
Step by Step Solution
- Step 1: Write the proportion equation
121,265.20 : 167,415.35 = 80,484.63 : x - Step 2: Convert to fraction form
121,265.20/167,415.35 = 80,484.63/x - Step 3: Cross multiply
121,265.20x = 167,415.35 × 80,484.63 - Step 4: Simplify right side
121,265.20x = 13,474,362,573.84 - Step 5: Solve for x
x = 13,474,362,573.84/121,265.20 - Step 6: Final answer
x = 111,114.83
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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.