Finding the Fourth Proportional to 121,517.80, 182,622.30 and 106,311.40
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Solution
The fourth proportional to 121,517.80, 182,622.30 and 106,311.40 is: 159,769.45
Step by Step Solution
- Step 1: Write the proportion equation
121,517.80 : 182,622.30 = 106,311.40 : x - Step 2: Convert to fraction form
121,517.80/182,622.30 = 106,311.40/x - Step 3: Cross multiply
121,517.80x = 182,622.30 × 106,311.40 - Step 4: Simplify right side
121,517.80x = 19,414,832,384.22 - Step 5: Solve for x
x = 19,414,832,384.22/121,517.80 - Step 6: Final answer
x = 159,769.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.