Finding the Fourth Proportional to 205,198.04, 283,178.06 and 128,720.36
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Solution
The fourth proportional to 205,198.04, 283,178.06 and 128,720.36 is: 177,637.09
Step by Step Solution
- Step 1: Write the proportion equation
205,198.04 : 283,178.06 = 128,720.36 : x - Step 2: Convert to fraction form
205,198.04/283,178.06 = 128,720.36/x - Step 3: Cross multiply
205,198.04x = 283,178.06 × 128,720.36 - Step 4: Simplify right side
205,198.04x = 36,450,781,827.30 - Step 5: Solve for x
x = 36,450,781,827.30/205,198.04 - Step 6: Final answer
x = 177,637.09
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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.