Finding the Fourth Proportional to 128,893.08, 193,416.17 and 69,727.44
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Solution
The fourth proportional to 128,893.08, 193,416.17 and 69,727.44 is: 104,632.57
Step by Step Solution
- Step 1: Write the proportion equation
128,893.08 : 193,416.17 = 69,727.44 : x - Step 2: Convert to fraction form
128,893.08/193,416.17 = 69,727.44/x - Step 3: Cross multiply
128,893.08x = 193,416.17 × 69,727.44 - Step 4: Simplify right side
128,893.08x = 13,486,414,040.07 - Step 5: Solve for x
x = 13,486,414,040.07/128,893.08 - Step 6: Final answer
x = 104,632.57
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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.