Finding the Fourth Proportional to 128,606,494,048.56, 177,477,108,923.40 and 71,512,578,717.12
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Solution
The fourth proportional to 128,606,494,048.56, 177,477,108,923.40 and 71,512,578,717.12 is: 98,687,440,445.89
Step by Step Solution
- Step 1: Write the proportion equation
128,606,494,048.56 : 177,477,108,923.40 = 71,512,578,717.12 : x - Step 2: Convert to fraction form
128,606,494,048.56/177,477,108,923.40 = 71,512,578,717.12/x - Step 3: Cross multiply
128,606,494,048.56x = 177,477,108,923.40 × 71,512,578,717.12 - Step 4: Simplify right side
128,606,494,048.56x = 12,691,845,722,371,522,560,000 - Step 5: Solve for x
x = 12,691,845,722,371,522,560,000/128,606,494,048.56 - Step 6: Final answer
x = 98,687,440,445.89
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1.5x scale
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.