Finding the Fourth Proportional to 212,403.06, 318,605.49 and 86,045.76
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Solution
The fourth proportional to 212,403.06, 318,605.49 and 86,045.76 is: 129,069.00
Step by Step Solution
- Step 1: Write the proportion equation
212,403.06 : 318,605.49 = 86,045.76 : x - Step 2: Convert to fraction form
212,403.06/318,605.49 = 86,045.76/x - Step 3: Cross multiply
212,403.06x = 318,605.49 × 86,045.76 - Step 4: Simplify right side
212,403.06x = 27,414,651,527.22 - Step 5: Solve for x
x = 27,414,651,527.22/212,403.06 - Step 6: Final answer
x = 129,069.00
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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.