Finding the Fourth Proportional to 143,821.42, 198,317.69 and 97,910.75
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Solution
The fourth proportional to 143,821.42, 198,317.69 and 97,910.75 is: 135,010.72
Step by Step Solution
- Step 1: Write the proportion equation
143,821.42 : 198,317.69 = 97,910.75 : x - Step 2: Convert to fraction form
143,821.42/198,317.69 = 97,910.75/x - Step 3: Cross multiply
143,821.42x = 198,317.69 × 97,910.75 - Step 4: Simplify right side
143,821.42x = 19,417,433,766.17 - Step 5: Solve for x
x = 19,417,433,766.17/143,821.42 - Step 6: Final answer
x = 135,010.72
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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.