Finding the Fourth Proportional to 138,102.47, 190,473.44 and 89,719.99
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Solution
The fourth proportional to 138,102.47, 190,473.44 and 89,719.99 is: 123,743.44
Step by Step Solution
- Step 1: Write the proportion equation
138,102.47 : 190,473.44 = 89,719.99 : x - Step 2: Convert to fraction form
138,102.47/190,473.44 = 89,719.99/x - Step 3: Cross multiply
138,102.47x = 190,473.44 × 89,719.99 - Step 4: Simplify right side
138,102.47x = 17,089,275,132.07 - Step 5: Solve for x
x = 17,089,275,132.07/138,102.47 - Step 6: Final answer
x = 123,743.44
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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.