Finding the Fourth Proportional to 99,069.62, 136,769.12 and 76,358.84
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Solution
The fourth proportional to 99,069.62, 136,769.12 and 76,358.84 is: 105,416.08
Step by Step Solution
- Step 1: Write the proportion equation
99,069.62 : 136,769.12 = 76,358.84 : x - Step 2: Convert to fraction form
99,069.62/136,769.12 = 76,358.84/x - Step 3: Cross multiply
99,069.62x = 136,769.12 × 76,358.84 - Step 4: Simplify right side
99,069.62x = 10,443,530,285.38 - Step 5: Solve for x
x = 10,443,530,285.38/99,069.62 - Step 6: Final answer
x = 105,416.08
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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.