Finding the Fourth Proportional to 157,660.40, 217,563.36 and 86,039.84
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Solution
The fourth proportional to 157,660.40, 217,563.36 and 86,039.84 is: 118,730.62
Step by Step Solution
- Step 1: Write the proportion equation
157,660.40 : 217,563.36 = 86,039.84 : x - Step 2: Convert to fraction form
157,660.40/217,563.36 = 86,039.84/x - Step 3: Cross multiply
157,660.40x = 217,563.36 × 86,039.84 - Step 4: Simplify right side
157,660.40x = 18,719,116,684.26 - Step 5: Solve for x
x = 18,719,116,684.26/157,660.40 - Step 6: Final answer
x = 118,730.62
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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.