Finding the Fourth Proportional to 157,009.80, 235,514.70 and 121,974.60
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Solution
The fourth proportional to 157,009.80, 235,514.70 and 121,974.60 is: 182,961.90
Step by Step Solution
- Step 1: Write the proportion equation
157,009.80 : 235,514.70 = 121,974.60 : x - Step 2: Convert to fraction form
157,009.80/235,514.70 = 121,974.60/x - Step 3: Cross multiply
157,009.80x = 235,514.70 × 121,974.60 - Step 4: Simplify right side
157,009.80x = 28,726,811,326.62 - Step 5: Solve for x
x = 28,726,811,326.62/157,009.80 - Step 6: Final answer
x = 182,961.90
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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.