Finding the Fourth Proportional to 115,981.80, 173,972.70 and 53,773.80
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Solution
The fourth proportional to 115,981.80, 173,972.70 and 53,773.80 is: 80,660.70
Step by Step Solution
- Step 1: Write the proportion equation
115,981.80 : 173,972.70 = 53,773.80 : x - Step 2: Convert to fraction form
115,981.80/173,972.70 = 53,773.80/x - Step 3: Cross multiply
115,981.80x = 173,972.70 × 53,773.80 - Step 4: Simplify right side
115,981.80x = 9,355,173,175.26 - Step 5: Solve for x
x = 9,355,173,175.26/115,981.80 - Step 6: Final answer
x = 80,660.70
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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.