Finding the Fourth Proportional to 121,407.12, 182,135.16 and 51,286.32
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Solution
The fourth proportional to 121,407.12, 182,135.16 and 51,286.32 is: 76,939.82
Step by Step Solution
- Step 1: Write the proportion equation
121,407.12 : 182,135.16 = 51,286.32 : x - Step 2: Convert to fraction form
121,407.12/182,135.16 = 51,286.32/x - Step 3: Cross multiply
121,407.12x = 182,135.16 × 51,286.32 - Step 4: Simplify right side
121,407.12x = 9,341,042,099.01 - Step 5: Solve for x
x = 9,341,042,099.01/121,407.12 - Step 6: Final answer
x = 76,939.82
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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.