Finding the Fourth Proportional to 115,324.74, 158,911.93 and 85,062.12
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Solution
The fourth proportional to 115,324.74, 158,911.93 and 85,062.12 is: 117,211.50
Step by Step Solution
- Step 1: Write the proportion equation
115,324.74 : 158,911.93 = 85,062.12 : x - Step 2: Convert to fraction form
115,324.74/158,911.93 = 85,062.12/x - Step 3: Cross multiply
115,324.74x = 158,911.93 × 85,062.12 - Step 4: Simplify right side
115,324.74x = 13,517,385,659.09 - Step 5: Solve for x
x = 13,517,385,659.09/115,324.74 - Step 6: Final answer
x = 117,211.50
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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.