Finding the Fourth Proportional to 128,602.26, 192,903.41 and 53,681.54
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Solution
The fourth proportional to 128,602.26, 192,903.41 and 53,681.54 is: 80,522.31
Step by Step Solution
- Step 1: Write the proportion equation
128,602.26 : 192,903.41 = 53,681.54 : x - Step 2: Convert to fraction form
128,602.26/192,903.41 = 53,681.54/x - Step 3: Cross multiply
128,602.26x = 192,903.41 × 53,681.54 - Step 4: Simplify right side
128,602.26x = 10,355,350,887.13 - Step 5: Solve for x
x = 10,355,350,887.13/128,602.26 - Step 6: Final answer
x = 80,522.31
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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.