Finding the Fourth Proportional to 128,603.20, 192,904.80 and 44,363.20
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Solution
The fourth proportional to 128,603.20, 192,904.80 and 44,363.20 is: 66,544.80
Step by Step Solution
- Step 1: Write the proportion equation
128,603.20 : 192,904.80 = 44,363.20 : x - Step 2: Convert to fraction form
128,603.20/192,904.80 = 44,363.20/x - Step 3: Cross multiply
128,603.20x = 192,904.80 × 44,363.20 - Step 4: Simplify right side
128,603.20x = 8,557,874,223.36 - Step 5: Solve for x
x = 8,557,874,223.36/128,603.20 - Step 6: Final answer
x = 66,544.80
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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.