Finding the Fourth Proportional to 128,246.88, 192,379.99 and 38,282.49
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Solution
The fourth proportional to 128,246.88, 192,379.99 and 38,282.49 is: 57,426.61
Step by Step Solution
- Step 1: Write the proportion equation
128,246.88 : 192,379.99 = 38,282.49 : x - Step 2: Convert to fraction form
128,246.88/192,379.99 = 38,282.49/x - Step 3: Cross multiply
128,246.88x = 192,379.99 × 38,282.49 - Step 4: Simplify right side
128,246.88x = 7,364,783,890.06 - Step 5: Solve for x
x = 7,364,783,890.06/128,246.88 - Step 6: Final answer
x = 57,426.61
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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.