Finding the Fourth Proportional to 145,958.14, 201,421.65 and 78,890.14
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Solution
The fourth proportional to 145,958.14, 201,421.65 and 78,890.14 is: 108,868.08
Step by Step Solution
- Step 1: Write the proportion equation
145,958.14 : 201,421.65 = 78,890.14 : x - Step 2: Convert to fraction form
145,958.14/201,421.65 = 78,890.14/x - Step 3: Cross multiply
145,958.14x = 201,421.65 × 78,890.14 - Step 4: Simplify right side
145,958.14x = 15,890,182,167.53 - Step 5: Solve for x
x = 15,890,182,167.53/145,958.14 - Step 6: Final answer
x = 108,868.08
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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.