Finding the Fourth Proportional to 128,557.60, 192,778.80 and 58,400.80
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Solution
The fourth proportional to 128,557.60, 192,778.80 and 58,400.80 is: 87,575.03
Step by Step Solution
- Step 1: Write the proportion equation
128,557.60 : 192,778.80 = 58,400.80 : x - Step 2: Convert to fraction form
128,557.60/192,778.80 = 58,400.80/x - Step 3: Cross multiply
128,557.60x = 192,778.80 × 58,400.80 - Step 4: Simplify right side
128,557.60x = 11,258,436,143.04 - Step 5: Solve for x
x = 11,258,436,143.04/128,557.60 - Step 6: Final answer
x = 87,575.03
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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.