Finding the Fourth Proportional to 139,712.19, 208,553.97 and 129,304.23
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Solution
The fourth proportional to 139,712.19, 208,553.97 and 129,304.23 is: 193,017.59
Step by Step Solution
- Step 1: Write the proportion equation
139,712.19 : 208,553.97 = 129,304.23 : x - Step 2: Convert to fraction form
139,712.19/208,553.97 = 129,304.23/x - Step 3: Cross multiply
139,712.19x = 208,553.97 × 129,304.23 - Step 4: Simplify right side
139,712.19x = 26,966,910,504.29 - Step 5: Solve for x
x = 26,966,910,504.29/139,712.19 - Step 6: Final answer
x = 193,017.59
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.