Finding the Fourth Proportional to 99,709,074.80, 149,563,612.20 and 65,668,857.20
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Solution
The fourth proportional to 99,709,074.80, 149,563,612.20 and 65,668,857.20 is: 98,503,285.80
Step by Step Solution
- Step 1: Write the proportion equation
99,709,074.80 : 149,563,612.20 = 65,668,857.20 : x - Step 2: Convert to fraction form
99,709,074.80/149,563,612.20 = 65,668,857.20/x - Step 3: Cross multiply
99,709,074.80x = 149,563,612.20 × 65,668,857.20 - Step 4: Simplify right side
99,709,074.80x = 9,821,671,491,877,978 - Step 5: Solve for x
x = 9,821,671,491,877,978/99,709,074.80 - Step 6: Final answer
x = 98,503,285.80
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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.