Finding the Fourth Proportional to 137,431.80, 206,147.70 and 84,943.80
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Solution
The fourth proportional to 137,431.80, 206,147.70 and 84,943.80 is: 127,415.70
Step by Step Solution
- Step 1: Write the proportion equation
137,431.80 : 206,147.70 = 84,943.80 : x - Step 2: Convert to fraction form
137,431.80/206,147.70 = 84,943.80/x - Step 3: Cross multiply
137,431.80x = 206,147.70 × 84,943.80 - Step 4: Simplify right side
137,431.80x = 17,510,968,999.26 - Step 5: Solve for x
x = 17,510,968,999.26/137,431.80 - Step 6: Final answer
x = 127,415.70
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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.