Finding the Fourth Proportional to 128,460,785.25, 177,276,078.45 and 69,723,471.84
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Solution
The fourth proportional to 128,460,785.25, 177,276,078.45 and 69,723,471.84 is: 96,218,496.87
Step by Step Solution
- Step 1: Write the proportion equation
128,460,785.25 : 177,276,078.45 = 69,723,471.84 : x - Step 2: Convert to fraction form
128,460,785.25/177,276,078.45 = 69,723,471.84/x - Step 3: Cross multiply
128,460,785.25x = 177,276,078.45 × 69,723,471.84 - Step 4: Simplify right side
128,460,785.25x = 12,360,303,663,714,206 - Step 5: Solve for x
x = 12,360,303,663,714,206/128,460,785.25 - Step 6: Final answer
x = 96,218,496.87
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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.