Finding the Fourth Proportional to 138,053.97, 190,468.68 and 112,516.46
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Solution
The fourth proportional to 138,053.97, 190,468.68 and 112,516.46 is: 155,235.38
Step by Step Solution
- Step 1: Write the proportion equation
138,053.97 : 190,468.68 = 112,516.46 : x - Step 2: Convert to fraction form
138,053.97/190,468.68 = 112,516.46/x - Step 3: Cross multiply
138,053.97x = 190,468.68 × 112,516.46 - Step 4: Simplify right side
138,053.97x = 21,430,860,662.13 - Step 5: Solve for x
x = 21,430,860,662.13/138,053.97 - Step 6: Final answer
x = 155,235.38
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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.