Finding the Fourth Proportional to 136,682.03, 188,621.28 and 76,252.68
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Solution
The fourth proportional to 136,682.03, 188,621.28 and 76,252.68 is: 105,228.75
Step by Step Solution
- Step 1: Write the proportion equation
136,682.03 : 188,621.28 = 76,252.68 : x - Step 2: Convert to fraction form
136,682.03/188,621.28 = 76,252.68/x - Step 3: Cross multiply
136,682.03x = 188,621.28 × 76,252.68 - Step 4: Simplify right side
136,682.03x = 14,382,878,105.03 - Step 5: Solve for x
x = 14,382,878,105.03/136,682.03 - Step 6: Final answer
x = 105,228.75
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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.