Finding the Fourth Proportional to 100,153.10, 149,986.65 and 53,302.70
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Solution
The fourth proportional to 100,153.10, 149,986.65 and 53,302.70 is: 79,824.72
Step by Step Solution
- Step 1: Write the proportion equation
100,153.10 : 149,986.65 = 53,302.70 : x - Step 2: Convert to fraction form
100,153.10/149,986.65 = 53,302.70/x - Step 3: Cross multiply
100,153.10x = 149,986.65 × 53,302.70 - Step 4: Simplify right side
100,153.10x = 7,994,693,408.96 - Step 5: Solve for x
x = 7,994,693,408.96/100,153.10 - Step 6: Final answer
x = 79,824.72
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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.