Finding the Fourth Proportional to 135,743.52, 187,342.68 and 78,382.70
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Solution
The fourth proportional to 135,743.52, 187,342.68 and 78,382.70 is: 108,177.72
Step by Step Solution
- Step 1: Write the proportion equation
135,743.52 : 187,342.68 = 78,382.70 : x - Step 2: Convert to fraction form
135,743.52/187,342.68 = 78,382.70/x - Step 3: Cross multiply
135,743.52x = 187,342.68 × 78,382.70 - Step 4: Simplify right side
135,743.52x = 14,684,424,146.92 - Step 5: Solve for x
x = 14,684,424,146.92/135,743.52 - Step 6: Final answer
x = 108,177.72
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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.