Finding the Fourth Proportional to 128,467,141.20, 177,284,840.76 and 69,729,851.76
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Solution
The fourth proportional to 128,467,141.20, 177,284,840.76 and 69,729,851.76 is: 96,227,296.33
Step by Step Solution
- Step 1: Write the proportion equation
128,467,141.20 : 177,284,840.76 = 69,729,851.76 : x - Step 2: Convert to fraction form
128,467,141.20/177,284,840.76 = 69,729,851.76/x - Step 3: Cross multiply
128,467,141.20x = 177,284,840.76 × 69,729,851.76 - Step 4: Simplify right side
128,467,141.20x = 12,362,045,665,490,006 - Step 5: Solve for x
x = 12,362,045,665,490,006/128,467,141.20 - Step 6: Final answer
x = 96,227,296.33
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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.