Finding the Fourth Proportional to 189,985,844.75, 285,163,048.49 and 91,686,728.61
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Solution
The fourth proportional to 189,985,844.75, 285,163,048.49 and 91,686,728.61 is: 137,619,026.68
Step by Step Solution
- Step 1: Write the proportion equation
189,985,844.75 : 285,163,048.49 = 91,686,728.61 : x - Step 2: Convert to fraction form
189,985,844.75/285,163,048.49 = 91,686,728.61/x - Step 3: Cross multiply
189,985,844.75x = 285,163,048.49 × 91,686,728.61 - Step 4: Simplify right side
189,985,844.75x = 26,145,667,036,044,468 - Step 5: Solve for x
x = 26,145,667,036,044,468/189,985,844.75 - Step 6: Final answer
x = 137,619,026.68
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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.