Finding the Fourth Proportional to 131,419.60, 197,129.39 and 31,579.80
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Solution
The fourth proportional to 131,419.60, 197,129.39 and 31,579.80 is: 47,369.69
Step by Step Solution
- Step 1: Write the proportion equation
131,419.60 : 197,129.39 = 31,579.80 : x - Step 2: Convert to fraction form
131,419.60/197,129.39 = 31,579.80/x - Step 3: Cross multiply
131,419.60x = 197,129.39 × 31,579.80 - Step 4: Simplify right side
131,419.60x = 6,225,305,956.13 - Step 5: Solve for x
x = 6,225,305,956.13/131,419.60 - Step 6: Final answer
x = 47,369.69
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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.