Finding the Fourth Proportional to 137,789.26, 190,134.50 and 77,366.50
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Solution
The fourth proportional to 137,789.26, 190,134.50 and 77,366.50 is: 106,757.52
Step by Step Solution
- Step 1: Write the proportion equation
137,789.26 : 190,134.50 = 77,366.50 : x - Step 2: Convert to fraction form
137,789.26/190,134.50 = 77,366.50/x - Step 3: Cross multiply
137,789.26x = 190,134.50 × 77,366.50 - Step 4: Simplify right side
137,789.26x = 14,710,039,932.08 - Step 5: Solve for x
x = 14,710,039,932.08/137,789.26 - Step 6: Final answer
x = 106,757.52
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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.