Finding the Fourth Proportional to 109,486.09, 151,114.99 and 71,178.96
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Solution
The fourth proportional to 109,486.09, 151,114.99 and 71,178.96 is: 98,242.69
Step by Step Solution
- Step 1: Write the proportion equation
109,486.09 : 151,114.99 = 71,178.96 : x - Step 2: Convert to fraction form
109,486.09/151,114.99 = 71,178.96/x - Step 3: Cross multiply
109,486.09x = 151,114.99 × 71,178.96 - Step 4: Simplify right side
109,486.09x = 10,756,207,828.61 - Step 5: Solve for x
x = 10,756,207,828.61/109,486.09 - Step 6: Final answer
x = 98,242.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.