Finding the Fourth Proportional to 91,728.90, 137,593.35 and 84,511.80
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Solution
The fourth proportional to 91,728.90, 137,593.35 and 84,511.80 is: 126,767.70
Step by Step Solution
- Step 1: Write the proportion equation
91,728.90 : 137,593.35 = 84,511.80 : x - Step 2: Convert to fraction form
91,728.90/137,593.35 = 84,511.80/x - Step 3: Cross multiply
91,728.90x = 137,593.35 × 84,511.80 - Step 4: Simplify right side
91,728.90x = 11,628,261,676.53 - Step 5: Solve for x
x = 11,628,261,676.53/91,728.90 - Step 6: Final answer
x = 126,767.70
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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.