Finding the Fourth Proportional to 136,067.10, 187,758.99 and 78,702.09
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Solution
The fourth proportional to 136,067.10, 187,758.99 and 78,702.09 is: 108,601.01
Step by Step Solution
- Step 1: Write the proportion equation
136,067.10 : 187,758.99 = 78,702.09 : x - Step 2: Convert to fraction form
136,067.10/187,758.99 = 78,702.09/x - Step 3: Cross multiply
136,067.10x = 187,758.99 × 78,702.09 - Step 4: Simplify right side
136,067.10x = 14,777,024,929.29 - Step 5: Solve for x
x = 14,777,024,929.29/136,067.10 - Step 6: Final answer
x = 108,601.01
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.