Finding the Fourth Proportional to 137,560.68, 189,799.20 and 80,961.12
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Solution
The fourth proportional to 137,560.68, 189,799.20 and 80,961.12 is: 111,706.02
Step by Step Solution
- Step 1: Write the proportion equation
137,560.68 : 189,799.20 = 80,961.12 : x - Step 2: Convert to fraction form
137,560.68/189,799.20 = 80,961.12/x - Step 3: Cross multiply
137,560.68x = 189,799.20 × 80,961.12 - Step 4: Simplify right side
137,560.68x = 15,366,355,807.10 - Step 5: Solve for x
x = 15,366,355,807.10/137,560.68 - Step 6: Final answer
x = 111,706.02
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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.