Finding the Fourth Proportional to 137,149.80, 205,724.70 and 113,821.80
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Solution
The fourth proportional to 137,149.80, 205,724.70 and 113,821.80 is: 170,732.70
Step by Step Solution
- Step 1: Write the proportion equation
137,149.80 : 205,724.70 = 113,821.80 : x - Step 2: Convert to fraction form
137,149.80/205,724.70 = 113,821.80/x - Step 3: Cross multiply
137,149.80x = 205,724.70 × 113,821.80 - Step 4: Simplify right side
137,149.80x = 23,415,955,658.46 - Step 5: Solve for x
x = 23,415,955,658.46/137,149.80 - Step 6: Final answer
x = 170,732.70
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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.