Finding the Fourth Proportional to 208,145,171.12, 287,236,534.12 and 115,325,340.08
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Solution
The fourth proportional to 208,145,171.12, 287,236,534.12 and 115,325,340.08 is: 159,146,862.75
Step by Step Solution
- Step 1: Write the proportion equation
208,145,171.12 : 287,236,534.12 = 115,325,340.08 : x - Step 2: Convert to fraction form
208,145,171.12/287,236,534.12 = 115,325,340.08/x - Step 3: Cross multiply
208,145,171.12x = 287,236,534.12 × 115,325,340.08 - Step 4: Simplify right side
208,145,171.12x = 33,125,650,980,789,524 - Step 5: Solve for x
x = 33,125,650,980,789,524/208,145,171.12 - Step 6: Final answer
x = 159,146,862.75
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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.