Finding the Fourth Proportional to 128,480,497.23, 177,303,311.13 and 69,743,202.15
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Solution
The fourth proportional to 128,480,497.23, 177,303,311.13 and 69,743,202.15 is: 96,245,741.08
Step by Step Solution
- Step 1: Write the proportion equation
128,480,497.23 : 177,303,311.13 = 69,743,202.15 : x - Step 2: Convert to fraction form
128,480,497.23/177,303,311.13 = 69,743,202.15/x - Step 3: Cross multiply
128,480,497.23x = 177,303,311.13 × 69,743,202.15 - Step 4: Simplify right side
128,480,497.23x = 12,365,700,670,003,936 - Step 5: Solve for x
x = 12,365,700,670,003,936/128,480,497.23 - Step 6: Final answer
x = 96,245,741.08
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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.