Finding the Fourth Proportional to 128,312.98, 192,471.90 and 44,072.62
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Solution
The fourth proportional to 128,312.98, 192,471.90 and 44,072.62 is: 66,109.76
Step by Step Solution
- Step 1: Write the proportion equation
128,312.98 : 192,471.90 = 44,072.62 : x - Step 2: Convert to fraction form
128,312.98/192,471.90 = 44,072.62/x - Step 3: Cross multiply
128,312.98x = 192,471.90 × 44,072.62 - Step 4: Simplify right side
128,312.98x = 8,482,740,909.38 - Step 5: Solve for x
x = 8,482,740,909.38/128,312.98 - Step 6: Final answer
x = 66,109.76
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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.