Finding the Fourth Proportional to 143,688.26, 198,289.80 and 80,026.05
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Solution
The fourth proportional to 143,688.26, 198,289.80 and 80,026.05 is: 110,435.95
Step by Step Solution
- Step 1: Write the proportion equation
143,688.26 : 198,289.80 = 80,026.05 : x - Step 2: Convert to fraction form
143,688.26/198,289.80 = 80,026.05/x - Step 3: Cross multiply
143,688.26x = 198,289.80 × 80,026.05 - Step 4: Simplify right side
143,688.26x = 15,868,349,449.29 - Step 5: Solve for x
x = 15,868,349,449.29/143,688.26 - Step 6: Final answer
x = 110,435.95
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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.