Finding the Fourth Proportional to 128,948.60, 193,427.76 and 35,461.64
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Solution
The fourth proportional to 128,948.60, 193,427.76 and 35,461.64 is: 53,193.80
Step by Step Solution
- Step 1: Write the proportion equation
128,948.60 : 193,427.76 = 35,461.64 : x - Step 2: Convert to fraction form
128,948.60/193,427.76 = 35,461.64/x - Step 3: Cross multiply
128,948.60x = 193,427.76 × 35,461.64 - Step 4: Simplify right side
128,948.60x = 6,859,265,591.13 - Step 5: Solve for x
x = 6,859,265,591.13/128,948.60 - Step 6: Final answer
x = 53,193.80
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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.