Finding the Fourth Proportional to 128,000.70, 192,001.05 and 125,927.10
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Solution
The fourth proportional to 128,000.70, 192,001.05 and 125,927.10 is: 188,890.65
Step by Step Solution
- Step 1: Write the proportion equation
128,000.70 : 192,001.05 = 125,927.10 : x - Step 2: Convert to fraction form
128,000.70/192,001.05 = 125,927.10/x - Step 3: Cross multiply
128,000.70x = 192,001.05 × 125,927.10 - Step 4: Simplify right side
128,000.70x = 24,178,135,423.46 - Step 5: Solve for x
x = 24,178,135,423.46/128,000.70 - Step 6: Final answer
x = 188,890.65
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Similar ratio
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1.5x scale
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.