Finding the Fourth Proportional to 143,609.84, 198,188.12 and 79,951.68
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Solution
The fourth proportional to 143,609.84, 198,188.12 and 79,951.68 is: 110,336.96
Step by Step Solution
- Step 1: Write the proportion equation
143,609.84 : 198,188.12 = 79,951.68 : x - Step 2: Convert to fraction form
143,609.84/198,188.12 = 79,951.68/x - Step 3: Cross multiply
143,609.84x = 198,188.12 × 79,951.68 - Step 4: Simplify right side
143,609.84x = 15,845,473,150.04 - Step 5: Solve for x
x = 15,845,473,150.04/143,609.84 - Step 6: Final answer
x = 110,336.96
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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.