Finding the Fourth Proportional to 212,903.73, 319,348.68 and 86,506.62
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Solution
The fourth proportional to 212,903.73, 319,348.68 and 86,506.62 is: 129,757.12
Step by Step Solution
- Step 1: Write the proportion equation
212,903.73 : 319,348.68 = 86,506.62 : x - Step 2: Convert to fraction form
212,903.73/319,348.68 = 86,506.62/x - Step 3: Cross multiply
212,903.73x = 319,348.68 × 86,506.62 - Step 4: Simplify right side
212,903.73x = 27,625,774,908.26 - Step 5: Solve for x
x = 27,625,774,908.26/212,903.73 - Step 6: Final answer
x = 129,757.12
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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.