Finding the Fourth Proportional to 136,092.49, 187,818.14 and 81,646.70
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Solution
The fourth proportional to 136,092.49, 187,818.14 and 81,646.70 is: 112,678.75
Step by Step Solution
- Step 1: Write the proportion equation
136,092.49 : 187,818.14 = 81,646.70 : x - Step 2: Convert to fraction form
136,092.49/187,818.14 = 81,646.70/x - Step 3: Cross multiply
136,092.49x = 187,818.14 × 81,646.70 - Step 4: Simplify right side
136,092.49x = 15,334,731,331.14 - Step 5: Solve for x
x = 15,334,731,331.14/136,092.49 - Step 6: Final answer
x = 112,678.75
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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.