Finding the Fourth Proportional to 136,982,510.62, 189,037,721.64 and 75,102,716.14
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Solution
The fourth proportional to 136,982,510.62, 189,037,721.64 and 75,102,716.14 is: 103,642,766.39
Step by Step Solution
- Step 1: Write the proportion equation
136,982,510.62 : 189,037,721.64 = 75,102,716.14 : x - Step 2: Convert to fraction form
136,982,510.62/189,037,721.64 = 75,102,716.14/x - Step 3: Cross multiply
136,982,510.62x = 189,037,721.64 × 75,102,716.14 - Step 4: Simplify right side
136,982,510.62x = 14,197,246,348,081,254 - Step 5: Solve for x
x = 14,197,246,348,081,254/136,982,510.62 - Step 6: Final answer
x = 103,642,766.39
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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.