Finding the Fourth Proportional to 135,909.10, 203,207.55 and 100,479.70
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Solution
The fourth proportional to 135,909.10, 203,207.55 and 100,479.70 is: 150,234.49
Step by Step Solution
- Step 1: Write the proportion equation
135,909.10 : 203,207.55 = 100,479.70 : x - Step 2: Convert to fraction form
135,909.10/203,207.55 = 100,479.70/x - Step 3: Cross multiply
135,909.10x = 203,207.55 × 100,479.70 - Step 4: Simplify right side
135,909.10x = 20,418,233,661.74 - Step 5: Solve for x
x = 20,418,233,661.74/135,909.10 - Step 6: Final answer
x = 150,234.49
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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.