Finding the Fourth Proportional to 115,202.70, 172,512.45 and 91,874.70
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Solution
The fourth proportional to 115,202.70, 172,512.45 and 91,874.70 is: 137,579.50
Step by Step Solution
- Step 1: Write the proportion equation
115,202.70 : 172,512.45 = 91,874.70 : x - Step 2: Convert to fraction form
115,202.70/172,512.45 = 91,874.70/x - Step 3: Cross multiply
115,202.70x = 172,512.45 × 91,874.70 - Step 4: Simplify right side
115,202.70x = 15,849,529,590.02 - Step 5: Solve for x
x = 15,849,529,590.02/115,202.70 - Step 6: Final answer
x = 137,579.50
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1.5x scale
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.