Finding the Fourth Proportional to 128,847.11, 193,062.89 and 69,710.63
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Solution
The fourth proportional to 128,847.11, 193,062.89 and 69,710.63 is: 104,453.53
Step by Step Solution
- Step 1: Write the proportion equation
128,847.11 : 193,062.89 = 69,710.63 : x - Step 2: Convert to fraction form
128,847.11/193,062.89 = 69,710.63/x - Step 3: Cross multiply
128,847.11x = 193,062.89 × 69,710.63 - Step 4: Simplify right side
128,847.11x = 13,458,534,900.48 - Step 5: Solve for x
x = 13,458,534,900.48/128,847.11 - Step 6: Final answer
x = 104,453.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.