Finding the Fourth Proportional to 127,239.39, 190,829.93 and 57,138.75
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Solution
The fourth proportional to 127,239.39, 190,829.93 and 57,138.75 is: 85,695.03
Step by Step Solution
- Step 1: Write the proportion equation
127,239.39 : 190,829.93 = 57,138.75 : x - Step 2: Convert to fraction form
127,239.39/190,829.93 = 57,138.75/x - Step 3: Cross multiply
127,239.39x = 190,829.93 × 57,138.75 - Step 4: Simplify right side
127,239.39x = 10,903,783,377.09 - Step 5: Solve for x
x = 10,903,783,377.09/127,239.39 - Step 6: Final answer
x = 85,695.03
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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.