Finding the Fourth Proportional to 129,354.26, 178,356.17 and 88,538.06
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Solution
The fourth proportional to 129,354.26, 178,356.17 and 88,538.06 is: 122,077.99
Step by Step Solution
- Step 1: Write the proportion equation
129,354.26 : 178,356.17 = 88,538.06 : x - Step 2: Convert to fraction form
129,354.26/178,356.17 = 88,538.06/x - Step 3: Cross multiply
129,354.26x = 178,356.17 × 88,538.06 - Step 4: Simplify right side
129,354.26x = 15,791,308,610.39 - Step 5: Solve for x
x = 15,791,308,610.39/129,354.26 - Step 6: Final answer
x = 122,077.99
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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.