Finding the Fourth Proportional to 127,221.68, 190,867.08 and 38,478.08
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Solution
The fourth proportional to 127,221.68, 190,867.08 and 38,478.08 is: 57,727.57
Step by Step Solution
- Step 1: Write the proportion equation
127,221.68 : 190,867.08 = 38,478.08 : x - Step 2: Convert to fraction form
127,221.68/190,867.08 = 38,478.08/x - Step 3: Cross multiply
127,221.68x = 190,867.08 × 38,478.08 - Step 4: Simplify right side
127,221.68x = 7,344,198,773.61 - Step 5: Solve for x
x = 7,344,198,773.61/127,221.68 - Step 6: Final answer
x = 57,727.57
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1.5x scale
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.