Finding the Fourth Proportional to 78,156.96, 117,233.70 and 18,992.94
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Solution
The fourth proportional to 78,156.96, 117,233.70 and 18,992.94 is: 28,488.99
Step by Step Solution
- Step 1: Write the proportion equation
78,156.96 : 117,233.70 = 18,992.94 : x - Step 2: Convert to fraction form
78,156.96/117,233.70 = 18,992.94/x - Step 3: Cross multiply
78,156.96x = 117,233.70 × 18,992.94 - Step 4: Simplify right side
78,156.96x = 2,226,612,630.08 - Step 5: Solve for x
x = 2,226,612,630.08/78,156.96 - Step 6: Final answer
x = 28,488.99
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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.