Finding the Fourth Proportional to 128,295,344.44, 177,051,309.44 and 72,539,567.15
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Solution
The fourth proportional to 128,295,344.44, 177,051,309.44 and 72,539,567.15 is: 100,106,713.96
Step by Step Solution
- Step 1: Write the proportion equation
128,295,344.44 : 177,051,309.44 = 72,539,567.15 : x - Step 2: Convert to fraction form
128,295,344.44/177,051,309.44 = 72,539,567.15/x - Step 3: Cross multiply
128,295,344.44x = 177,051,309.44 × 72,539,567.15 - Step 4: Simplify right side
128,295,344.44x = 12,843,225,348,870,354 - Step 5: Solve for x
x = 12,843,225,348,870,354/128,295,344.44 - Step 6: Final answer
x = 100,106,713.96
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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.