Finding the Fourth Proportional to 99,765,028.80, 149,647,543.20 and 65,724,811.20
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Solution
The fourth proportional to 99,765,028.80, 149,647,543.20 and 65,724,811.20 is: 98,587,216.80
Step by Step Solution
- Step 1: Write the proportion equation
99,765,028.80 : 149,647,543.20 = 65,724,811.20 : x - Step 2: Convert to fraction form
99,765,028.80/149,647,543.20 = 65,724,811.20/x - Step 3: Cross multiply
99,765,028.80x = 149,647,543.20 × 65,724,811.20 - Step 4: Simplify right side
99,765,028.80x = 9,835,556,523,363,844 - Step 5: Solve for x
x = 9,835,556,523,363,844/99,765,028.80 - Step 6: Final answer
x = 98,587,216.80
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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.