Finding the Fourth Proportional to 99,697,812.60, 149,285,639.70 and 80,163,204.60
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Solution
The fourth proportional to 99,697,812.60, 149,285,639.70 and 80,163,204.60 is: 120,034,883.08
Step by Step Solution
- Step 1: Write the proportion equation
99,697,812.60 : 149,285,639.70 = 80,163,204.60 : x - Step 2: Convert to fraction form
99,697,812.60/149,285,639.70 = 80,163,204.60/x - Step 3: Cross multiply
99,697,812.60x = 149,285,639.70 × 80,163,204.60 - Step 4: Simplify right side
99,697,812.60x = 11,967,215,279,112,980 - Step 5: Solve for x
x = 11,967,215,279,112,980/99,697,812.60 - Step 6: Final answer
x = 120,034,883.08
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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.