Finding the Fourth Proportional to 128,480,757.92, 177,303,672.56 and 69,743,463.72
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Solution
The fourth proportional to 128,480,757.92, 177,303,672.56 and 69,743,463.72 is: 96,246,102.96
Step by Step Solution
- Step 1: Write the proportion equation
128,480,757.92 : 177,303,672.56 = 69,743,463.72 : x - Step 2: Convert to fraction form
128,480,757.92/177,303,672.56 = 69,743,463.72/x - Step 3: Cross multiply
128,480,757.92x = 177,303,672.56 × 69,743,463.72 - Step 4: Simplify right side
128,480,757.92x = 12,365,772,254,611,120 - Step 5: Solve for x
x = 12,365,772,254,611,120/128,480,757.92 - Step 6: Final answer
x = 96,246,102.96
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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.