Finding the Fourth Proportional to 128,460,765.38, 177,276,051.02 and 69,723,451.96
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Solution
The fourth proportional to 128,460,765.38, 177,276,051.02 and 69,723,451.96 is: 96,218,469.43
Step by Step Solution
- Step 1: Write the proportion equation
128,460,765.38 : 177,276,051.02 = 69,723,451.96 : x - Step 2: Convert to fraction form
128,460,765.38/177,276,051.02 = 69,723,451.96/x - Step 3: Cross multiply
128,460,765.38x = 177,276,051.02 × 69,723,451.96 - Step 4: Simplify right side
128,460,765.38x = 12,360,298,226,682,598 - Step 5: Solve for x
x = 12,360,298,226,682,598/128,460,765.38 - Step 6: Final answer
x = 96,218,469.43
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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.