Finding the Fourth Proportional to 99,223.24, 136,929.12 and 53,902.12
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Solution
The fourth proportional to 99,223.24, 136,929.12 and 53,902.12 is: 74,385.50
Step by Step Solution
- Step 1: Write the proportion equation
99,223.24 : 136,929.12 = 53,902.12 : x - Step 2: Convert to fraction form
99,223.24/136,929.12 = 53,902.12/x - Step 3: Cross multiply
99,223.24x = 136,929.12 × 53,902.12 - Step 4: Simplify right side
99,223.24x = 7,380,769,857.73 - Step 5: Solve for x
x = 7,380,769,857.73/99,223.24 - Step 6: Final answer
x = 74,385.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.