Finding the Fourth Proportional to 135,893.69, 187,503.47 and 82,177.55
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Solution
The fourth proportional to 135,893.69, 187,503.47 and 82,177.55 is: 113,386.99
Step by Step Solution
- Step 1: Write the proportion equation
135,893.69 : 187,503.47 = 82,177.55 : x - Step 2: Convert to fraction form
135,893.69/187,503.47 = 82,177.55/x - Step 3: Cross multiply
135,893.69x = 187,503.47 × 82,177.55 - Step 4: Simplify right side
135,893.69x = 15,408,575,823.24 - Step 5: Solve for x
x = 15,408,575,823.24/135,893.69 - Step 6: Final answer
x = 113,386.99
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1.5x scale
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.