Finding the Fourth Proportional to 111,409.44, 153,766.26 and 87,162.09
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Solution
The fourth proportional to 111,409.44, 153,766.26 and 87,162.09 is: 120,300.30
Step by Step Solution
- Step 1: Write the proportion equation
111,409.44 : 153,766.26 = 87,162.09 : x - Step 2: Convert to fraction form
111,409.44/153,766.26 = 87,162.09/x - Step 3: Cross multiply
111,409.44x = 153,766.26 × 87,162.09 - Step 4: Simplify right side
111,409.44x = 13,402,588,593.08 - Step 5: Solve for x
x = 13,402,588,593.08/111,409.44 - Step 6: Final answer
x = 120,300.30
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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.