Finding the Fourth Proportional to 128,115,108.70, 192,154,000.65 and 37,229,220.70
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Solution
The fourth proportional to 128,115,108.70, 192,154,000.65 and 37,229,220.70 is: 55,838,407.91
Step by Step Solution
- Step 1: Write the proportion equation
128,115,108.70 : 192,154,000.65 = 37,229,220.70 : x - Step 2: Convert to fraction form
128,115,108.70/192,154,000.65 = 37,229,220.70/x - Step 3: Cross multiply
128,115,108.70x = 192,154,000.65 × 37,229,220.70 - Step 4: Simplify right side
128,115,108.70x = 7,153,743,698,586,794 - Step 5: Solve for x
x = 7,153,743,698,586,794/128,115,108.70 - Step 6: Final answer
x = 55,838,407.91
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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.