Finding the Fourth Proportional to 157,127.49, 235,728.09 and 51,945.75
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Solution
The fourth proportional to 157,127.49, 235,728.09 and 51,945.75 is: 77,930.81
Step by Step Solution
- Step 1: Write the proportion equation
157,127.49 : 235,728.09 = 51,945.75 : x - Step 2: Convert to fraction form
157,127.49/235,728.09 = 51,945.75/x - Step 3: Cross multiply
157,127.49x = 235,728.09 × 51,945.75 - Step 4: Simplify right side
157,127.49x = 12,245,072,431.12 - Step 5: Solve for x
x = 12,245,072,431.12/157,127.49 - Step 6: Final answer
x = 77,930.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.