Finding the Fourth Proportional to 128,460,774.38, 177,276,063.47 and 69,723,460.98
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Solution
The fourth proportional to 128,460,774.38, 177,276,063.47 and 69,723,460.98 is: 96,218,481.90
Step by Step Solution
- Step 1: Write the proportion equation
128,460,774.38 : 177,276,063.47 = 69,723,460.98 : x - Step 2: Convert to fraction form
128,460,774.38/177,276,063.47 = 69,723,460.98/x - Step 3: Cross multiply
128,460,774.38x = 177,276,063.47 × 69,723,460.98 - Step 4: Simplify right side
128,460,774.38x = 12,360,300,693,689,932 - Step 5: Solve for x
x = 12,360,300,693,689,932/128,460,774.38 - Step 6: Final answer
x = 96,218,481.90
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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.