Finding the Fourth Proportional to 115,353.52, 172,911.48 and 83,684.68
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Solution
The fourth proportional to 115,353.52, 172,911.48 and 83,684.68 is: 125,440.84
Step by Step Solution
- Step 1: Write the proportion equation
115,353.52 : 172,911.48 = 83,684.68 : x - Step 2: Convert to fraction form
115,353.52/172,911.48 = 83,684.68/x - Step 3: Cross multiply
115,353.52x = 172,911.48 × 83,684.68 - Step 4: Simplify right side
115,353.52x = 14,470,041,872.13 - Step 5: Solve for x
x = 14,470,041,872.13/115,353.52 - Step 6: Final answer
x = 125,440.84
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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.