Finding the Fourth Proportional to 128,952.30, 193,428.45 and 40,205.10
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Solution
The fourth proportional to 128,952.30, 193,428.45 and 40,205.10 is: 60,307.65
Step by Step Solution
- Step 1: Write the proportion equation
128,952.30 : 193,428.45 = 40,205.10 : x - Step 2: Convert to fraction form
128,952.30/193,428.45 = 40,205.10/x - Step 3: Cross multiply
128,952.30x = 193,428.45 × 40,205.10 - Step 4: Simplify right side
128,952.30x = 7,776,810,175.10 - Step 5: Solve for x
x = 7,776,810,175.10/128,952.30 - Step 6: Final answer
x = 60,307.65
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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.