Finding the Fourth Proportional to 139,690.12, 209,554.74 and 44,888.44
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Solution
The fourth proportional to 139,690.12, 209,554.74 and 44,888.44 is: 67,338.95
Step by Step Solution
- Step 1: Write the proportion equation
139,690.12 : 209,554.74 = 44,888.44 : x - Step 2: Convert to fraction form
139,690.12/209,554.74 = 44,888.44/x - Step 3: Cross multiply
139,690.12x = 209,554.74 × 44,888.44 - Step 4: Simplify right side
139,690.12x = 9,406,585,373.21 - Step 5: Solve for x
x = 9,406,585,373.21/139,690.12 - Step 6: Final answer
x = 67,338.95
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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.