Finding the Fourth Proportional to 158,877.75, 219,270.74 and 91,809.75
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Solution
The fourth proportional to 158,877.75, 219,270.74 and 91,809.75 is: 126,708.69
Step by Step Solution
- Step 1: Write the proportion equation
158,877.75 : 219,270.74 = 91,809.75 : x - Step 2: Convert to fraction form
158,877.75/219,270.74 = 91,809.75/x - Step 3: Cross multiply
158,877.75x = 219,270.74 × 91,809.75 - Step 4: Simplify right side
158,877.75x = 20,131,191,362.67 - Step 5: Solve for x
x = 20,131,191,362.67/158,877.75 - Step 6: Final answer
x = 126,708.69
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1.5x scale
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.