Finding the Fourth Proportional to 128,822.40, 193,233.60 and 97,718.40
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Solution
The fourth proportional to 128,822.40, 193,233.60 and 97,718.40 is: 146,577.60
Step by Step Solution
- Step 1: Write the proportion equation
128,822.40 : 193,233.60 = 97,718.40 : x - Step 2: Convert to fraction form
128,822.40/193,233.60 = 97,718.40/x - Step 3: Cross multiply
128,822.40x = 193,233.60 × 97,718.40 - Step 4: Simplify right side
128,822.40x = 18,882,478,218.24 - Step 5: Solve for x
x = 18,882,478,218.24/128,822.40 - Step 6: Final answer
x = 146,577.60
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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.