Finding the Fourth Proportional to 280,108.80, 420,163.20 and 93,120.30
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Solution
The fourth proportional to 280,108.80, 420,163.20 and 93,120.30 is: 139,680.45
Step by Step Solution
- Step 1: Write the proportion equation
280,108.80 : 420,163.20 = 93,120.30 : x - Step 2: Convert to fraction form
280,108.80/420,163.20 = 93,120.30/x - Step 3: Cross multiply
280,108.80x = 420,163.20 × 93,120.30 - Step 4: Simplify right side
280,108.80x = 39,125,723,232.96 - Step 5: Solve for x
x = 39,125,723,232.96/280,108.80 - Step 6: Final answer
x = 139,680.45
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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.