Finding the Fourth Proportional to 99,649,920.80, 149,474,881.20 and 74,140,752.80
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Solution
The fourth proportional to 99,649,920.80, 149,474,881.20 and 74,140,752.80 is: 111,211,129.20
Step by Step Solution
- Step 1: Write the proportion equation
99,649,920.80 : 149,474,881.20 = 74,140,752.80 : x - Step 2: Convert to fraction form
99,649,920.80/149,474,881.20 = 74,140,752.80/x - Step 3: Cross multiply
99,649,920.80x = 149,474,881.20 × 74,140,752.80 - Step 4: Simplify right side
99,649,920.80x = 11,082,180,216,858,566 - Step 5: Solve for x
x = 11,082,180,216,858,566/99,649,920.80 - Step 6: Final answer
x = 111,211,129.20
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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.