Finding the Fourth Proportional to 121,516.80, 182,620.80 and 106,310.40
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Solution
The fourth proportional to 121,516.80, 182,620.80 and 106,310.40 is: 159,767.95
Step by Step Solution
- Step 1: Write the proportion equation
121,516.80 : 182,620.80 = 106,310.40 : x - Step 2: Convert to fraction form
121,516.80/182,620.80 = 106,310.40/x - Step 3: Cross multiply
121,516.80x = 182,620.80 × 106,310.40 - Step 4: Simplify right side
121,516.80x = 19,414,490,296.32 - Step 5: Solve for x
x = 19,414,490,296.32/121,516.80 - Step 6: Final answer
x = 159,767.95
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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.