Finding the Fourth Proportional to 261,691.75, 361,134.62 and 142,459.75
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Solution
The fourth proportional to 261,691.75, 361,134.62 and 142,459.75 is: 196,594.46
Step by Step Solution
- Step 1: Write the proportion equation
261,691.75 : 361,134.62 = 142,459.75 : x - Step 2: Convert to fraction form
261,691.75/361,134.62 = 142,459.75/x - Step 3: Cross multiply
261,691.75x = 361,134.62 × 142,459.75 - Step 4: Simplify right side
261,691.75x = 51,447,147,681.55 - Step 5: Solve for x
x = 51,447,147,681.55/261,691.75 - Step 6: Final answer
x = 196,594.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.