Finding the Fourth Proportional to 103,629.80, 155,444.70 and 101,325.80
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Solution
The fourth proportional to 103,629.80, 155,444.70 and 101,325.80 is: 151,988.70
Step by Step Solution
- Step 1: Write the proportion equation
103,629.80 : 155,444.70 = 101,325.80 : x - Step 2: Convert to fraction form
103,629.80/155,444.70 = 101,325.80/x - Step 3: Cross multiply
103,629.80x = 155,444.70 × 101,325.80 - Step 4: Simplify right side
103,629.80x = 15,750,558,583.26 - Step 5: Solve for x
x = 15,750,558,583.26/103,629.80 - Step 6: Final answer
x = 151,988.70
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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.