Finding the Fourth Proportional to 128,873,107.80, 193,415,415.30 and 127,865,338.20
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Solution
The fourth proportional to 128,873,107.80, 193,415,415.30 and 127,865,338.20 is: 191,902,933.92
Step by Step Solution
- Step 1: Write the proportion equation
128,873,107.80 : 193,415,415.30 = 127,865,338.20 : x - Step 2: Convert to fraction form
128,873,107.80/193,415,415.30 = 127,865,338.20/x - Step 3: Cross multiply
128,873,107.80x = 193,415,415.30 × 127,865,338.20 - Step 4: Simplify right side
128,873,107.80x = 24,731,127,490,427,956 - Step 5: Solve for x
x = 24,731,127,490,427,956/128,873,107.80 - Step 6: Final answer
x = 191,902,933.92
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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.