Finding the Fourth Proportional to 138,318.64, 207,403.71 and 43,531.09
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Solution
The fourth proportional to 138,318.64, 207,403.71 and 43,531.09 is: 65,273.27
Step by Step Solution
- Step 1: Write the proportion equation
138,318.64 : 207,403.71 = 43,531.09 : x - Step 2: Convert to fraction form
138,318.64/207,403.71 = 43,531.09/x - Step 3: Cross multiply
138,318.64x = 207,403.71 × 43,531.09 - Step 4: Simplify right side
138,318.64x = 9,028,509,566.34 - Step 5: Solve for x
x = 9,028,509,566.34/138,318.64 - Step 6: Final answer
x = 65,273.27
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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.