Finding the Fourth Proportional to 81,651,159.60, 122,659,216.20 and 68,214,231.60
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Solution
The fourth proportional to 81,651,159.60, 122,659,216.20 and 68,214,231.60 is: 102,473,794.89
Step by Step Solution
- Step 1: Write the proportion equation
81,651,159.60 : 122,659,216.20 = 68,214,231.60 : x - Step 2: Convert to fraction form
81,651,159.60/122,659,216.20 = 68,214,231.60/x - Step 3: Cross multiply
81,651,159.60x = 122,659,216.20 × 68,214,231.60 - Step 4: Simplify right side
81,651,159.60x = 8,367,104,181,741,271 - Step 5: Solve for x
x = 8,367,104,181,741,271/81,651,159.60 - Step 6: Final answer
x = 102,473,794.89
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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.