Finding the Fourth Proportional to 99,575,611.20, 149,363,416.80 and 65,138,234.40
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Solution
The fourth proportional to 99,575,611.20, 149,363,416.80 and 65,138,234.40 is: 97,707,351.60
Step by Step Solution
- Step 1: Write the proportion equation
99,575,611.20 : 149,363,416.80 = 65,138,234.40 : x - Step 2: Convert to fraction form
99,575,611.20/149,363,416.80 = 65,138,234.40/x - Step 3: Cross multiply
99,575,611.20x = 149,363,416.80 × 65,138,234.40 - Step 4: Simplify right side
99,575,611.20x = 9,729,269,254,303,298 - Step 5: Solve for x
x = 9,729,269,254,303,298/99,575,611.20 - Step 6: Final answer
x = 97,707,351.60
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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.