Finding the Fourth Proportional to 121,292.20, 181,938.30 and 110,405.80
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Solution
The fourth proportional to 121,292.20, 181,938.30 and 110,405.80 is: 165,608.70
Step by Step Solution
- Step 1: Write the proportion equation
121,292.20 : 181,938.30 = 110,405.80 : x - Step 2: Convert to fraction form
121,292.20/181,938.30 = 110,405.80/x - Step 3: Cross multiply
121,292.20x = 181,938.30 × 110,405.80 - Step 4: Simplify right side
121,292.20x = 20,087,043,562.14 - Step 5: Solve for x
x = 20,087,043,562.14/121,292.20 - Step 6: Final answer
x = 165,608.70
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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.