Finding the Fourth Proportional to 128,460,160.44, 177,141,020.46 and 76,239,106.92
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Solution
The fourth proportional to 128,460,160.44, 177,141,020.46 and 76,239,106.92 is: 105,130,440.07
Step by Step Solution
- Step 1: Write the proportion equation
128,460,160.44 : 177,141,020.46 = 76,239,106.92 : x - Step 2: Convert to fraction form
128,460,160.44/177,141,020.46 = 76,239,106.92/x - Step 3: Cross multiply
128,460,160.44x = 177,141,020.46 × 76,239,106.92 - Step 4: Simplify right side
128,460,160.44x = 13,505,073,198,767,848 - Step 5: Solve for x
x = 13,505,073,198,767,848/128,460,160.44 - Step 6: Final answer
x = 105,130,440.07
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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.