Finding the Fourth Proportional to 128,570.13, 192,073.34 and 83,222.08
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Solution
The fourth proportional to 128,570.13, 192,073.34 and 83,222.08 is: 124,327.03
Step by Step Solution
- Step 1: Write the proportion equation
128,570.13 : 192,073.34 = 83,222.08 : x - Step 2: Convert to fraction form
128,570.13/192,073.34 = 83,222.08/x - Step 3: Cross multiply
128,570.13x = 192,073.34 × 83,222.08 - Step 4: Simplify right side
128,570.13x = 15,984,741,906.98 - Step 5: Solve for x
x = 15,984,741,906.98/128,570.13 - Step 6: Final answer
x = 124,327.03
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.