Finding the Fourth Proportional to 99,697,817.10, 149,285,646.45 and 80,163,209.10
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Solution
The fourth proportional to 99,697,817.10, 149,285,646.45 and 80,163,209.10 is: 120,034,889.83
Step by Step Solution
- Step 1: Write the proportion equation
99,697,817.10 : 149,285,646.45 = 80,163,209.10 : x - Step 2: Convert to fraction form
99,697,817.10/149,285,646.45 = 80,163,209.10/x - Step 3: Cross multiply
99,697,817.10x = 149,285,646.45 × 80,163,209.10 - Step 4: Simplify right side
99,697,817.10x = 11,967,216,492,000,020 - Step 5: Solve for x
x = 11,967,216,492,000,020/99,697,817.10 - Step 6: Final answer
x = 120,034,889.83
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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.