Finding the Fourth Proportional to 135,897.75, 187,542.14 and 76,281.75
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Solution
The fourth proportional to 135,897.75, 187,542.14 and 76,281.75 is: 105,270.63
Step by Step Solution
- Step 1: Write the proportion equation
135,897.75 : 187,542.14 = 76,281.75 : x - Step 2: Convert to fraction form
135,897.75/187,542.14 = 76,281.75/x - Step 3: Cross multiply
135,897.75x = 187,542.14 × 76,281.75 - Step 4: Simplify right side
135,897.75x = 14,306,042,256.54 - Step 5: Solve for x
x = 14,306,042,256.54/135,897.75 - Step 6: Final answer
x = 105,270.63
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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.