Finding the Fourth Proportional to 137,806.80, 190,122.36 and 86,805.84
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Solution
The fourth proportional to 137,806.80, 190,122.36 and 86,805.84 is: 119,759.92
Step by Step Solution
- Step 1: Write the proportion equation
137,806.80 : 190,122.36 = 86,805.84 : x - Step 2: Convert to fraction form
137,806.80/190,122.36 = 86,805.84/x - Step 3: Cross multiply
137,806.80x = 190,122.36 × 86,805.84 - Step 4: Simplify right side
137,806.80x = 16,503,731,162.58 - Step 5: Solve for x
x = 16,503,731,162.58/137,806.80 - Step 6: Final answer
x = 119,759.92
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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.