Finding the Fourth Proportional to 161,954.80, 242,932.20 and 128,129.20
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Solution
The fourth proportional to 161,954.80, 242,932.20 and 128,129.20 is: 192,193.80
Step by Step Solution
- Step 1: Write the proportion equation
161,954.80 : 242,932.20 = 128,129.20 : x - Step 2: Convert to fraction form
161,954.80/242,932.20 = 128,129.20/x - Step 3: Cross multiply
161,954.80x = 242,932.20 × 128,129.20 - Step 4: Simplify right side
161,954.80x = 31,126,708,440.24 - Step 5: Solve for x
x = 31,126,708,440.24/161,954.80 - Step 6: Final answer
x = 192,193.80
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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.