Finding the Fourth Proportional to 134,971.92, 186,478.20 and 115,039.44
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Solution
The fourth proportional to 134,971.92, 186,478.20 and 115,039.44 is: 158,939.34
Step by Step Solution
- Step 1: Write the proportion equation
134,971.92 : 186,478.20 = 115,039.44 : x - Step 2: Convert to fraction form
134,971.92/186,478.20 = 115,039.44/x - Step 3: Cross multiply
134,971.92x = 186,478.20 × 115,039.44 - Step 4: Simplify right side
134,971.92x = 21,452,347,700.21 - Step 5: Solve for x
x = 21,452,347,700.21/134,971.92 - Step 6: Final answer
x = 158,939.34
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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.