Finding the Fourth Proportional to 115,789,245.12, 159,789,159 and 63,578,281.05
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Solution
The fourth proportional to 115,789,245.12, 159,789,159 and 63,578,281.05 is: 87,738,028.25
Step by Step Solution
- Step 1: Write the proportion equation
115,789,245.12 : 159,789,159 = 63,578,281.05 : x - Step 2: Convert to fraction form
115,789,245.12/159,789,159 = 63,578,281.05/x - Step 3: Cross multiply
115,789,245.12x = 159,789,159 × 63,578,281.05 - Step 4: Simplify right side
115,789,245.12x = 10,159,120,059,645,136 - Step 5: Solve for x
x = 10,159,120,059,645,136/115,789,245.12 - Step 6: Final answer
x = 87,738,028.25
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.