Finding the Fourth Proportional to 126,881.12, 190,319.52 and 38,135.36
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Solution
The fourth proportional to 126,881.12, 190,319.52 and 38,135.36 is: 57,202.39
Step by Step Solution
- Step 1: Write the proportion equation
126,881.12 : 190,319.52 = 38,135.36 : x - Step 2: Convert to fraction form
126,881.12/190,319.52 = 38,135.36/x - Step 3: Cross multiply
126,881.12x = 190,319.52 × 38,135.36 - Step 4: Simplify right side
126,881.12x = 7,257,903,410.23 - Step 5: Solve for x
x = 7,257,903,410.23/126,881.12 - Step 6: Final answer
x = 57,202.39
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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.