Finding the Fourth Proportional to 128,568,309.48, 177,425,570.34 and 69,831,542.12
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Solution
The fourth proportional to 128,568,309.48, 177,425,570.34 and 69,831,542.12 is: 96,368,235.99
Step by Step Solution
- Step 1: Write the proportion equation
128,568,309.48 : 177,425,570.34 = 69,831,542.12 : x - Step 2: Convert to fraction form
128,568,309.48/177,425,570.34 = 69,831,542.12/x - Step 3: Cross multiply
128,568,309.48x = 177,425,570.34 × 69,831,542.12 - Step 4: Simplify right side
128,568,309.48x = 12,389,901,188,362,734 - Step 5: Solve for x
x = 12,389,901,188,362,734/128,568,309.48 - Step 6: Final answer
x = 96,368,235.99
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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.