Finding the Fourth Proportional to 212,355.07, 318,643.27 and 86,088.62
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Solution
The fourth proportional to 212,355.07, 318,643.27 and 86,088.62 is: 129,177.80
Step by Step Solution
- Step 1: Write the proportion equation
212,355.07 : 318,643.27 = 86,088.62 : x - Step 2: Convert to fraction form
212,355.07/318,643.27 = 86,088.62/x - Step 3: Cross multiply
212,355.07x = 318,643.27 × 86,088.62 - Step 4: Simplify right side
212,355.07x = 27,431,559,967.97 - Step 5: Solve for x
x = 27,431,559,967.97/212,355.07 - Step 6: Final answer
x = 129,177.80
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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.