Finding the Fourth Proportional to 145,235.80, 217,853.70 and 136,487.80
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Solution
The fourth proportional to 145,235.80, 217,853.70 and 136,487.80 is: 204,731.70
Step by Step Solution
- Step 1: Write the proportion equation
145,235.80 : 217,853.70 = 136,487.80 : x - Step 2: Convert to fraction form
145,235.80/217,853.70 = 136,487.80/x - Step 3: Cross multiply
145,235.80x = 217,853.70 × 136,487.80 - Step 4: Simplify right side
145,235.80x = 29,734,372,234.86 - Step 5: Solve for x
x = 29,734,372,234.86/145,235.80 - Step 6: Final answer
x = 204,731.70
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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.