Finding the Fourth Proportional to 131,631.80, 197,447.70 and 117,853.70
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Solution
The fourth proportional to 131,631.80, 197,447.70 and 117,853.70 is: 176,780.55
Step by Step Solution
- Step 1: Write the proportion equation
131,631.80 : 197,447.70 = 117,853.70 : x - Step 2: Convert to fraction form
131,631.80/197,447.70 = 117,853.70/x - Step 3: Cross multiply
131,631.80x = 197,447.70 × 117,853.70 - Step 4: Simplify right side
131,631.80x = 23,269,942,001.49 - Step 5: Solve for x
x = 23,269,942,001.49/131,631.80 - Step 6: Final answer
x = 176,780.55
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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.