Finding the Fourth Proportional to 129,062,905.84, 177,905,129.64 and 87,738,053.68
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Solution
The fourth proportional to 129,062,905.84, 177,905,129.64 and 87,738,053.68 is: 120,941,410.03
Step by Step Solution
- Step 1: Write the proportion equation
129,062,905.84 : 177,905,129.64 = 87,738,053.68 : x - Step 2: Convert to fraction form
129,062,905.84/177,905,129.64 = 87,738,053.68/x - Step 3: Cross multiply
129,062,905.84x = 177,905,129.64 × 87,738,053.68 - Step 4: Simplify right side
129,062,905.84x = 15,609,049,814,301,680 - Step 5: Solve for x
x = 15,609,049,814,301,680/129,062,905.84 - Step 6: Final answer
x = 120,941,410.03
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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.