Finding the Fourth Proportional to 138,315.40, 207,473.10 and 136,241.80
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Solution
The fourth proportional to 138,315.40, 207,473.10 and 136,241.80 is: 204,362.70
Step by Step Solution
- Step 1: Write the proportion equation
138,315.40 : 207,473.10 = 136,241.80 : x - Step 2: Convert to fraction form
138,315.40/207,473.10 = 136,241.80/x - Step 3: Cross multiply
138,315.40x = 207,473.10 × 136,241.80 - Step 4: Simplify right side
138,315.40x = 28,266,508,595.58 - Step 5: Solve for x
x = 28,266,508,595.58/138,315.40 - Step 6: Final answer
x = 204,362.70
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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.