Finding the Fourth Proportional to 138,719.24, 207,991.38 and 76,433.48
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Solution
The fourth proportional to 138,719.24, 207,991.38 and 76,433.48 is: 114,602.02
Step by Step Solution
- Step 1: Write the proportion equation
138,719.24 : 207,991.38 = 76,433.48 : x - Step 2: Convert to fraction form
138,719.24/207,991.38 = 76,433.48/x - Step 3: Cross multiply
138,719.24x = 207,991.38 × 76,433.48 - Step 4: Simplify right side
138,719.24x = 15,897,504,983.40 - Step 5: Solve for x
x = 15,897,504,983.40/138,719.24 - Step 6: Final answer
x = 114,602.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.