Finding the Fourth Proportional to 128,539.60, 193,039.80 and 93,518.80
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Solution
The fourth proportional to 128,539.60, 193,039.80 and 93,518.80 is: 140,445.83
Step by Step Solution
- Step 1: Write the proportion equation
128,539.60 : 193,039.80 = 93,518.80 : x - Step 2: Convert to fraction form
128,539.60/193,039.80 = 93,518.80/x - Step 3: Cross multiply
128,539.60x = 193,039.80 × 93,518.80 - Step 4: Simplify right side
128,539.60x = 18,052,850,448.24 - Step 5: Solve for x
x = 18,052,850,448.24/128,539.60 - Step 6: Final answer
x = 140,445.83
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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.