Finding the Fourth Proportional to 135,486.15, 186,982.37 and 75,075.75
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Solution
The fourth proportional to 135,486.15, 186,982.37 and 75,075.75 is: 103,610.90
Step by Step Solution
- Step 1: Write the proportion equation
135,486.15 : 186,982.37 = 75,075.75 : x - Step 2: Convert to fraction form
135,486.15/186,982.37 = 75,075.75/x - Step 3: Cross multiply
135,486.15x = 186,982.37 × 75,075.75 - Step 4: Simplify right side
135,486.15x = 14,037,841,289.15 - Step 5: Solve for x
x = 14,037,841,289.15/135,486.15 - Step 6: Final answer
x = 103,610.90
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1.5x scale
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.