Finding the Fourth Proportional to 129,177.14, 178,294.43 and 81,495.68
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Solution
The fourth proportional to 129,177.14, 178,294.43 and 81,495.68 is: 112,482.95
Step by Step Solution
- Step 1: Write the proportion equation
129,177.14 : 178,294.43 = 81,495.68 : x - Step 2: Convert to fraction form
129,177.14/178,294.43 = 81,495.68/x - Step 3: Cross multiply
129,177.14x = 178,294.43 × 81,495.68 - Step 4: Simplify right side
129,177.14x = 14,530,225,125.33 - Step 5: Solve for x
x = 14,530,225,125.33/129,177.14 - Step 6: Final answer
x = 112,482.95
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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.