Finding the Fourth Proportional to 121,085.80, 181,628.70 and 93,059.80
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Solution
The fourth proportional to 121,085.80, 181,628.70 and 93,059.80 is: 139,589.70
Step by Step Solution
- Step 1: Write the proportion equation
121,085.80 : 181,628.70 = 93,059.80 : x - Step 2: Convert to fraction form
121,085.80/181,628.70 = 93,059.80/x - Step 3: Cross multiply
121,085.80x = 181,628.70 × 93,059.80 - Step 4: Simplify right side
121,085.80x = 16,902,330,496.26 - Step 5: Solve for x
x = 16,902,330,496.26/121,085.80 - Step 6: Final answer
x = 139,589.70
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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.