Finding the Fourth Proportional to 131,423.80, 197,135.70 and 100,319.80
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Solution
The fourth proportional to 131,423.80, 197,135.70 and 100,319.80 is: 150,479.70
Step by Step Solution
- Step 1: Write the proportion equation
131,423.80 : 197,135.70 = 100,319.80 : x - Step 2: Convert to fraction form
131,423.80/197,135.70 = 100,319.80/x - Step 3: Cross multiply
131,423.80x = 197,135.70 × 100,319.80 - Step 4: Simplify right side
131,423.80x = 19,776,613,996.86 - Step 5: Solve for x
x = 19,776,613,996.86/131,423.80 - Step 6: Final answer
x = 150,479.70
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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.