Finding the Fourth Proportional to 115,442.71, 173,218.84 and 79,958.59
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Solution
The fourth proportional to 115,442.71, 173,218.84 and 79,958.59 is: 119,975.82
Step by Step Solution
- Step 1: Write the proportion equation
115,442.71 : 173,218.84 = 79,958.59 : x - Step 2: Convert to fraction form
115,442.71/173,218.84 = 79,958.59/x - Step 3: Cross multiply
115,442.71x = 173,218.84 × 79,958.59 - Step 4: Simplify right side
115,442.71x = 13,850,333,874.74 - Step 5: Solve for x
x = 13,850,333,874.74/115,442.71 - Step 6: Final answer
x = 119,975.82
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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.