Finding the Fourth Proportional to 129,153.80, 193,541.16 and 91,785.80
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Solution
The fourth proportional to 129,153.80, 193,541.16 and 91,785.80 is: 137,544.00
Step by Step Solution
- Step 1: Write the proportion equation
129,153.80 : 193,541.16 = 91,785.80 : x - Step 2: Convert to fraction form
129,153.80/193,541.16 = 91,785.80/x - Step 3: Cross multiply
129,153.80x = 193,541.16 × 91,785.80 - Step 4: Simplify right side
129,153.80x = 17,764,330,203.53 - Step 5: Solve for x
x = 17,764,330,203.53/129,153.80 - Step 6: Final answer
x = 137,544.00
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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.