Finding the Fourth Proportional to 153,156.11, 229,534.49 and 78,213.08
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Solution
The fourth proportional to 153,156.11, 229,534.49 and 78,213.08 is: 117,217.66
Step by Step Solution
- Step 1: Write the proportion equation
153,156.11 : 229,534.49 = 78,213.08 : x - Step 2: Convert to fraction form
153,156.11/229,534.49 = 78,213.08/x - Step 3: Cross multiply
153,156.11x = 229,534.49 × 78,213.08 - Step 4: Simplify right side
153,156.11x = 17,952,600,198.50 - Step 5: Solve for x
x = 17,952,600,198.50/153,156.11 - Step 6: Final answer
x = 117,217.66
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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.