Finding the Fourth Proportional to 99,121.08, 136,788.09 and 53,799.48
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Solution
The fourth proportional to 99,121.08, 136,788.09 and 53,799.48 is: 74,243.82
Step by Step Solution
- Step 1: Write the proportion equation
99,121.08 : 136,788.09 = 53,799.48 : x - Step 2: Convert to fraction form
99,121.08/136,788.09 = 53,799.48/x - Step 3: Cross multiply
99,121.08x = 136,788.09 × 53,799.48 - Step 4: Simplify right side
99,121.08x = 7,359,128,112.19 - Step 5: Solve for x
x = 7,359,128,112.19/99,121.08 - Step 6: Final answer
x = 74,243.82
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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.