Finding the Fourth Proportional to 143,528.48, 198,077.08 and 79,867.66
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Solution
The fourth proportional to 143,528.48, 198,077.08 and 79,867.66 is: 110,221.70
Step by Step Solution
- Step 1: Write the proportion equation
143,528.48 : 198,077.08 = 79,867.66 : x - Step 2: Convert to fraction form
143,528.48/198,077.08 = 79,867.66/x - Step 3: Cross multiply
143,528.48x = 198,077.08 × 79,867.66 - Step 4: Simplify right side
143,528.48x = 15,819,952,879.23 - Step 5: Solve for x
x = 15,819,952,879.23/143,528.48 - Step 6: Final answer
x = 110,221.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.