Finding the Fourth Proportional to 138,601,207.70, 207,901,811.55 and 70,576,759.70
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Solution
The fourth proportional to 138,601,207.70, 207,901,811.55 and 70,576,759.70 is: 105,865,139.55
Step by Step Solution
- Step 1: Write the proportion equation
138,601,207.70 : 207,901,811.55 = 70,576,759.70 : x - Step 2: Convert to fraction form
138,601,207.70/207,901,811.55 = 70,576,759.70/x - Step 3: Cross multiply
138,601,207.70x = 207,901,811.55 × 70,576,759.70 - Step 4: Simplify right side
138,601,207.70x = 14,673,036,194,959,036 - Step 5: Solve for x
x = 14,673,036,194,959,036/138,601,207.70 - Step 6: Final answer
x = 105,865,139.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.