Finding the Fourth Proportional to 128,265,933.52, 192,465,048.12 and 60,115,548.88
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Solution
The fourth proportional to 128,265,933.52, 192,465,048.12 and 60,115,548.88 is: 90,204,325.42
Step by Step Solution
- Step 1: Write the proportion equation
128,265,933.52 : 192,465,048.12 = 60,115,548.88 : x - Step 2: Convert to fraction form
128,265,933.52/192,465,048.12 = 60,115,548.88/x - Step 3: Cross multiply
128,265,933.52x = 192,465,048.12 × 60,115,548.88 - Step 4: Simplify right side
128,265,933.52x = 11,570,142,007,949,412 - Step 5: Solve for x
x = 11,570,142,007,949,412/128,265,933.52 - Step 6: Final answer
x = 90,204,325.42
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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.