Finding the Fourth Proportional to 149,419.98, 206,193.56 and 81,435.49
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Solution
The fourth proportional to 149,419.98, 206,193.56 and 81,435.49 is: 112,377.70
Step by Step Solution
- Step 1: Write the proportion equation
149,419.98 : 206,193.56 = 81,435.49 : x - Step 2: Convert to fraction form
149,419.98/206,193.56 = 81,435.49/x - Step 3: Cross multiply
149,419.98x = 206,193.56 × 81,435.49 - Step 4: Simplify right side
149,419.98x = 16,791,473,593.44 - Step 5: Solve for x
x = 16,791,473,593.44/149,419.98 - Step 6: Final answer
x = 112,377.70
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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.