Finding the Fourth Proportional to 212,867.92, 319,345.08 and 79,745.68
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Solution
The fourth proportional to 212,867.92, 319,345.08 and 79,745.68 is: 119,634.70
Step by Step Solution
- Step 1: Write the proportion equation
212,867.92 : 319,345.08 = 79,745.68 : x - Step 2: Convert to fraction form
212,867.92/319,345.08 = 79,745.68/x - Step 3: Cross multiply
212,867.92x = 319,345.08 × 79,745.68 - Step 4: Simplify right side
212,867.92x = 25,466,390,559.25 - Step 5: Solve for x
x = 25,466,390,559.25/212,867.92 - Step 6: Final answer
x = 119,634.70
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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.