Finding the Fourth Proportional to 115,645.60, 173,353.20 and 53,207.20
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Solution
The fourth proportional to 115,645.60, 173,353.20 and 53,207.20 is: 79,757.80
Step by Step Solution
- Step 1: Write the proportion equation
115,645.60 : 173,353.20 = 53,207.20 : x - Step 2: Convert to fraction form
115,645.60/173,353.20 = 53,207.20/x - Step 3: Cross multiply
115,645.60x = 173,353.20 × 53,207.20 - Step 4: Simplify right side
115,645.60x = 9,223,638,383.04 - Step 5: Solve for x
x = 9,223,638,383.04/115,645.60 - Step 6: Final answer
x = 79,757.80
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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.