Finding the Fourth Proportional to 157,759.13, 217,716.42 and 86,145.80
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Solution
The fourth proportional to 157,759.13, 217,716.42 and 86,145.80 is: 118,886.02
Step by Step Solution
- Step 1: Write the proportion equation
157,759.13 : 217,716.42 = 86,145.80 : x - Step 2: Convert to fraction form
157,759.13/217,716.42 = 86,145.80/x - Step 3: Cross multiply
157,759.13x = 217,716.42 × 86,145.80 - Step 4: Simplify right side
157,759.13x = 18,755,355,174.04 - Step 5: Solve for x
x = 18,755,355,174.04/157,759.13 - Step 6: Final answer
x = 118,886.02
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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.