Finding the Fourth Proportional to 131,877.18, 181,989.96 and 71,447.70
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Solution
The fourth proportional to 131,877.18, 181,989.96 and 71,447.70 is: 98,597.53
Step by Step Solution
- Step 1: Write the proportion equation
131,877.18 : 181,989.96 = 71,447.70 : x - Step 2: Convert to fraction form
131,877.18/181,989.96 = 71,447.70/x - Step 3: Cross multiply
131,877.18x = 181,989.96 × 71,447.70 - Step 4: Simplify right side
131,877.18x = 13,002,764,065.09 - Step 5: Solve for x
x = 13,002,764,065.09/131,877.18 - Step 6: Final answer
x = 98,597.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.