Finding the Fourth Proportional to 168,509,579.70, 252,764,369.55 and 77,810,315.70
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Solution
The fourth proportional to 168,509,579.70, 252,764,369.55 and 77,810,315.70 is: 116,715,473.55
Step by Step Solution
- Step 1: Write the proportion equation
168,509,579.70 : 252,764,369.55 = 77,810,315.70 : x - Step 2: Convert to fraction form
168,509,579.70/252,764,369.55 = 77,810,315.70/x - Step 3: Cross multiply
168,509,579.70x = 252,764,369.55 × 77,810,315.70 - Step 4: Simplify right side
168,509,579.70x = 19,667,675,392,396,968 - Step 5: Solve for x
x = 19,667,675,392,396,968/168,509,579.70 - Step 6: Final answer
x = 116,715,473.55
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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.