Finding the Fourth Proportional to 91,657.80, 137,486.70 and 68,329.80
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Solution
The fourth proportional to 91,657.80, 137,486.70 and 68,329.80 is: 102,494.70
Step by Step Solution
- Step 1: Write the proportion equation
91,657.80 : 137,486.70 = 68,329.80 : x - Step 2: Convert to fraction form
91,657.80/137,486.70 = 68,329.80/x - Step 3: Cross multiply
91,657.80x = 137,486.70 × 68,329.80 - Step 4: Simplify right side
91,657.80x = 9,394,438,713.66 - Step 5: Solve for x
x = 9,394,438,713.66/91,657.80 - Step 6: Final answer
x = 102,494.70
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1.5x scale
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.