Finding the Fourth Proportional to 138,530.80, 207,277.80 and 91,874.80
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Solution
The fourth proportional to 138,530.80, 207,277.80 and 91,874.80 is: 137,468.39
Step by Step Solution
- Step 1: Write the proportion equation
138,530.80 : 207,277.80 = 91,874.80 : x - Step 2: Convert to fraction form
138,530.80/207,277.80 = 91,874.80/x - Step 3: Cross multiply
138,530.80x = 207,277.80 × 91,874.80 - Step 4: Simplify right side
138,530.80x = 19,043,606,419.44 - Step 5: Solve for x
x = 19,043,606,419.44/138,530.80 - Step 6: Final answer
x = 137,468.39
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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.