Finding the Fourth Proportional to 99,197.74, 136,946.19 and 76,486.96
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Solution
The fourth proportional to 99,197.74, 136,946.19 and 76,486.96 is: 105,593.11
Step by Step Solution
- Step 1: Write the proportion equation
99,197.74 : 136,946.19 = 76,486.96 : x - Step 2: Convert to fraction form
99,197.74/136,946.19 = 76,486.96/x - Step 3: Cross multiply
99,197.74x = 136,946.19 × 76,486.96 - Step 4: Simplify right side
99,197.74x = 10,474,597,756.68 - Step 5: Solve for x
x = 10,474,597,756.68/99,197.74 - Step 6: Final answer
x = 105,593.11
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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.