Finding the Fourth Proportional to 128,722.03, 192,905.35 and 92,897.75
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Solution
The fourth proportional to 128,722.03, 192,905.35 and 92,897.75 is: 139,218.39
Step by Step Solution
- Step 1: Write the proportion equation
128,722.03 : 192,905.35 = 92,897.75 : x - Step 2: Convert to fraction form
128,722.03/192,905.35 = 92,897.75/x - Step 3: Cross multiply
128,722.03x = 192,905.35 × 92,897.75 - Step 4: Simplify right side
128,722.03x = 17,920,473,227.98 - Step 5: Solve for x
x = 17,920,473,227.98/128,722.03 - Step 6: Final answer
x = 139,218.39
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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.