Finding the Fourth Proportional to 90,982.05, 136,269.93 and 69,765.84
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Solution
The fourth proportional to 90,982.05, 136,269.93 and 69,765.84 is: 104,492.99
Step by Step Solution
- Step 1: Write the proportion equation
90,982.05 : 136,269.93 = 69,765.84 : x - Step 2: Convert to fraction form
90,982.05/136,269.93 = 69,765.84/x - Step 3: Cross multiply
90,982.05x = 136,269.93 × 69,765.84 - Step 4: Simplify right side
90,982.05x = 9,506,986,133.19 - Step 5: Solve for x
x = 9,506,986,133.19/90,982.05 - Step 6: Final answer
x = 104,492.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.