Finding the Fourth Proportional to 128,544,597.42, 177,390,995.94 and 69,806,851.26
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Solution
The fourth proportional to 128,544,597.42, 177,390,995.94 and 69,806,851.26 is: 96,333,156.87
Step by Step Solution
- Step 1: Write the proportion equation
128,544,597.42 : 177,390,995.94 = 69,806,851.26 : x - Step 2: Convert to fraction form
128,544,597.42/177,390,995.94 = 69,806,851.26/x - Step 3: Cross multiply
128,544,597.42x = 177,390,995.94 × 69,806,851.26 - Step 4: Simplify right side
128,544,597.42x = 12,383,106,868,446,844 - Step 5: Solve for x
x = 12,383,106,868,446,844/128,544,597.42 - Step 6: Final answer
x = 96,333,156.87
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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.