Finding the Fourth Proportional to 137,762.27, 190,120.43 and 91,742.99
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Solution
The fourth proportional to 137,762.27, 190,120.43 and 91,742.99 is: 126,610.99
Step by Step Solution
- Step 1: Write the proportion equation
137,762.27 : 190,120.43 = 91,742.99 : x - Step 2: Convert to fraction form
137,762.27/190,120.43 = 91,742.99/x - Step 3: Cross multiply
137,762.27x = 190,120.43 × 91,742.99 - Step 4: Simplify right side
137,762.27x = 17,442,216,724.87 - Step 5: Solve for x
x = 17,442,216,724.87/137,762.27 - Step 6: Final answer
x = 126,610.99
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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.