Finding the Fourth Proportional to 128,536.60, 193,035.30 and 93,515.80
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Solution
The fourth proportional to 128,536.60, 193,035.30 and 93,515.80 is: 140,441.33
Step by Step Solution
- Step 1: Write the proportion equation
128,536.60 : 193,035.30 = 93,515.80 : x - Step 2: Convert to fraction form
128,536.60/193,035.30 = 93,515.80/x - Step 3: Cross multiply
128,536.60x = 193,035.30 × 93,515.80 - Step 4: Simplify right side
128,536.60x = 18,051,850,507.74 - Step 5: Solve for x
x = 18,051,850,507.74/128,536.60 - Step 6: Final answer
x = 140,441.33
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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.