Finding the Fourth Proportional to 157,722.24, 217,660.42 and 86,102.80
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Solution
The fourth proportional to 157,722.24, 217,660.42 and 86,102.80 is: 118,823.90
Step by Step Solution
- Step 1: Write the proportion equation
157,722.24 : 217,660.42 = 86,102.80 : x - Step 2: Convert to fraction form
157,722.24/217,660.42 = 86,102.80/x - Step 3: Cross multiply
157,722.24x = 217,660.42 × 86,102.80 - Step 4: Simplify right side
157,722.24x = 18,741,171,611.18 - Step 5: Solve for x
x = 18,741,171,611.18/157,722.24 - Step 6: Final answer
x = 118,823.90
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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.