Finding the Fourth Proportional to 99,743,138.70, 149,331,272.85 and 88,405,730.70
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Solution
The fourth proportional to 99,743,138.70, 149,331,272.85 and 88,405,730.70 is: 132,357,377.81
Step by Step Solution
- Step 1: Write the proportion equation
99,743,138.70 : 149,331,272.85 = 88,405,730.70 : x - Step 2: Convert to fraction form
99,743,138.70/149,331,272.85 = 88,405,730.70/x - Step 3: Cross multiply
99,743,138.70x = 149,331,272.85 × 88,405,730.70 - Step 4: Simplify right side
99,743,138.70x = 13,201,740,292,665,322 - Step 5: Solve for x
x = 13,201,740,292,665,322/99,743,138.70 - Step 6: Final answer
x = 132,357,377.81
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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.