Finding the Fourth Proportional to 136,663.11, 188,536.97 and 85,641.12
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Solution
The fourth proportional to 136,663.11, 188,536.97 and 85,641.12 is: 118,148.32
Step by Step Solution
- Step 1: Write the proportion equation
136,663.11 : 188,536.97 = 85,641.12 : x - Step 2: Convert to fraction form
136,663.11/188,536.97 = 85,641.12/x - Step 3: Cross multiply
136,663.11x = 188,536.97 × 85,641.12 - Step 4: Simplify right side
136,663.11x = 16,146,516,844.00 - Step 5: Solve for x
x = 16,146,516,844.00/136,663.11 - Step 6: Final answer
x = 118,148.32
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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.