Finding the Fourth Proportional to 136,632.40, 203,574.84 and 128,992.95
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Solution
The fourth proportional to 136,632.40, 203,574.84 and 128,992.95 is: 192,192.48
Step by Step Solution
- Step 1: Write the proportion equation
136,632.40 : 203,574.84 = 128,992.95 : x - Step 2: Convert to fraction form
136,632.40/203,574.84 = 128,992.95/x - Step 3: Cross multiply
136,632.40x = 203,574.84 × 128,992.95 - Step 4: Simplify right side
136,632.40x = 26,259,719,157.38 - Step 5: Solve for x
x = 26,259,719,157.38/136,632.40 - Step 6: Final answer
x = 192,192.48
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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.