Finding the Fourth Proportional to 115,412.53, 172,781.35 and 104,344.69
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Solution
The fourth proportional to 115,412.53, 172,781.35 and 104,344.69 is: 156,211.95
Step by Step Solution
- Step 1: Write the proportion equation
115,412.53 : 172,781.35 = 104,344.69 : x - Step 2: Convert to fraction form
115,412.53/172,781.35 = 104,344.69/x - Step 3: Cross multiply
115,412.53x = 172,781.35 × 104,344.69 - Step 4: Simplify right side
115,412.53x = 18,028,816,403.53 - Step 5: Solve for x
x = 18,028,816,403.53/115,412.53 - Step 6: Final answer
x = 156,211.95
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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.