Finding the Fourth Proportional to 186,939.09, 257,963.94 and 102,055.95
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Solution
The fourth proportional to 186,939.09, 257,963.94 and 102,055.95 is: 140,830.66
Step by Step Solution
- Step 1: Write the proportion equation
186,939.09 : 257,963.94 = 102,055.95 : x - Step 2: Convert to fraction form
186,939.09/257,963.94 = 102,055.95/x - Step 3: Cross multiply
186,939.09x = 257,963.94 × 102,055.95 - Step 4: Simplify right side
186,939.09x = 26,326,754,962.44 - Step 5: Solve for x
x = 26,326,754,962.44/186,939.09 - Step 6: Final answer
x = 140,830.66
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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.