Finding the Fourth Proportional to 157,485.66, 217,153.65 and 128,716.03
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Solution
The fourth proportional to 157,485.66, 217,153.65 and 128,716.03 is: 177,483.81
Step by Step Solution
- Step 1: Write the proportion equation
157,485.66 : 217,153.65 = 128,716.03 : x - Step 2: Convert to fraction form
157,485.66/217,153.65 = 128,716.03/x - Step 3: Cross multiply
157,485.66x = 217,153.65 × 128,716.03 - Step 4: Simplify right side
157,485.66x = 27,951,155,185.13 - Step 5: Solve for x
x = 27,951,155,185.13/157,485.66 - Step 6: Final answer
x = 177,483.81
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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.