Finding the Fourth Proportional to 136,612.16, 188,525.59 and 76,186.62
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Solution
The fourth proportional to 136,612.16, 188,525.59 and 76,186.62 is: 105,137.99
Step by Step Solution
- Step 1: Write the proportion equation
136,612.16 : 188,525.59 = 76,186.62 : x - Step 2: Convert to fraction form
136,612.16/188,525.59 = 76,186.62/x - Step 3: Cross multiply
136,612.16x = 188,525.59 × 76,186.62 - Step 4: Simplify right side
136,612.16x = 14,363,127,485.61 - Step 5: Solve for x
x = 14,363,127,485.61/136,612.16 - Step 6: Final answer
x = 105,137.99
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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.