Finding the Fourth Proportional to 128,110.80, 192,166.20 and 115,669.20
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Solution
The fourth proportional to 128,110.80, 192,166.20 and 115,669.20 is: 173,503.80
Step by Step Solution
- Step 1: Write the proportion equation
128,110.80 : 192,166.20 = 115,669.20 : x - Step 2: Convert to fraction form
128,110.80/192,166.20 = 115,669.20/x - Step 3: Cross multiply
128,110.80x = 192,166.20 × 115,669.20 - Step 4: Simplify right side
128,110.80x = 22,227,710,621.04 - Step 5: Solve for x
x = 22,227,710,621.04/128,110.80 - Step 6: Final answer
x = 173,503.80
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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.