Finding the Fourth Proportional to 99,214.84, 136,902.12 and 56,765.44
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Solution
The fourth proportional to 99,214.84, 136,902.12 and 56,765.44 is: 78,328.09
Step by Step Solution
- Step 1: Write the proportion equation
99,214.84 : 136,902.12 = 56,765.44 : x - Step 2: Convert to fraction form
99,214.84/136,902.12 = 56,765.44/x - Step 3: Cross multiply
99,214.84x = 136,902.12 × 56,765.44 - Step 4: Simplify right side
99,214.84x = 7,771,309,078.73 - Step 5: Solve for x
x = 7,771,309,078.73/99,214.84 - Step 6: Final answer
x = 78,328.09
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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.