Finding the Fourth Proportional to 145,823.86, 201,209.97 and 85,391.38
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Solution
The fourth proportional to 145,823.86, 201,209.97 and 85,391.38 is: 117,824.32
Step by Step Solution
- Step 1: Write the proportion equation
145,823.86 : 201,209.97 = 85,391.38 : x - Step 2: Convert to fraction form
145,823.86/201,209.97 = 85,391.38/x - Step 3: Cross multiply
145,823.86x = 201,209.97 × 85,391.38 - Step 4: Simplify right side
145,823.86x = 17,181,597,008.06 - Step 5: Solve for x
x = 17,181,597,008.06/145,823.86 - Step 6: Final answer
x = 117,824.32
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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.