Finding the Fourth Proportional to 99,674,292.80, 149,511,439.20 and 74,165,124.80
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Solution
The fourth proportional to 99,674,292.80, 149,511,439.20 and 74,165,124.80 is: 111,247,687.20
Step by Step Solution
- Step 1: Write the proportion equation
99,674,292.80 : 149,511,439.20 = 74,165,124.80 : x - Step 2: Convert to fraction form
99,674,292.80/149,511,439.20 = 74,165,124.80/x - Step 3: Cross multiply
99,674,292.80x = 149,511,439.20 × 74,165,124.80 - Step 4: Simplify right side
99,674,292.80x = 11,088,534,547,295,610 - Step 5: Solve for x
x = 11,088,534,547,295,610/99,674,292.80 - Step 6: Final answer
x = 111,247,687.20
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1.5x scale
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.