Finding the Fourth Proportional to 137,306.18, 205,990.29 and 74,124.92
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Solution
The fourth proportional to 137,306.18, 205,990.29 and 74,124.92 is: 111,204.12
Step by Step Solution
- Step 1: Write the proportion equation
137,306.18 : 205,990.29 = 74,124.92 : x - Step 2: Convert to fraction form
137,306.18/205,990.29 = 74,124.92/x - Step 3: Cross multiply
137,306.18x = 205,990.29 × 74,124.92 - Step 4: Simplify right side
137,306.18x = 15,269,012,737.08 - Step 5: Solve for x
x = 15,269,012,737.08/137,306.18 - Step 6: Final answer
x = 111,204.12
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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.