Finding the Fourth Proportional to 128,395.53, 177,184.26 and 71,039.03
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Solution
The fourth proportional to 128,395.53, 177,184.26 and 71,039.03 is: 98,032.99
Step by Step Solution
- Step 1: Write the proportion equation
128,395.53 : 177,184.26 = 71,039.03 : x - Step 2: Convert to fraction form
128,395.53/177,184.26 = 71,039.03/x - Step 3: Cross multiply
128,395.53x = 177,184.26 × 71,039.03 - Step 4: Simplify right side
128,395.53x = 12,586,997,075.75 - Step 5: Solve for x
x = 12,586,997,075.75/128,395.53 - Step 6: Final answer
x = 98,032.99
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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.