Finding the Fourth Proportional to 100,521,138.68, 138,725,096.84 and 75,697,529.58
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Solution
The fourth proportional to 100,521,138.68, 138,725,096.84 and 75,697,529.58 is: 104,467,052.99
Step by Step Solution
- Step 1: Write the proportion equation
100,521,138.68 : 138,725,096.84 = 75,697,529.58 : x - Step 2: Convert to fraction form
100,521,138.68/138,725,096.84 = 75,697,529.58/x - Step 3: Cross multiply
100,521,138.68x = 138,725,096.84 × 75,697,529.58 - Step 4: Simplify right side
100,521,138.68x = 10,501,147,121,534,264 - Step 5: Solve for x
x = 10,501,147,121,534,264/100,521,138.68 - Step 6: Final answer
x = 104,467,052.99
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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.