Finding the Fourth Proportional to 131,811.24, 197,517.33 and 87,278.52
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Solution
The fourth proportional to 131,811.24, 197,517.33 and 87,278.52 is: 130,785.66
Step by Step Solution
- Step 1: Write the proportion equation
131,811.24 : 197,517.33 = 87,278.52 : x - Step 2: Convert to fraction form
131,811.24/197,517.33 = 87,278.52/x - Step 3: Cross multiply
131,811.24x = 197,517.33 × 87,278.52 - Step 4: Simplify right side
131,811.24x = 17,239,020,236.75 - Step 5: Solve for x
x = 17,239,020,236.75/131,811.24 - Step 6: Final answer
x = 130,785.66
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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.