Finding the Fourth Proportional to 205,107.49, 307,798.84 and 71,988.14
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Solution
The fourth proportional to 205,107.49, 307,798.84 and 71,988.14 is: 108,030.51
Step by Step Solution
- Step 1: Write the proportion equation
205,107.49 : 307,798.84 = 71,988.14 : x - Step 2: Convert to fraction form
205,107.49/307,798.84 = 71,988.14/x - Step 3: Cross multiply
205,107.49x = 307,798.84 × 71,988.14 - Step 4: Simplify right side
205,107.49x = 22,157,866,440.31 - Step 5: Solve for x
x = 22,157,866,440.31/205,107.49 - Step 6: Final answer
x = 108,030.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.