Finding the Fourth Proportional to 135,513.76, 187,040.10 and 90,193.68
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Solution
The fourth proportional to 135,513.76, 187,040.10 and 90,193.68 is: 124,487.99
Step by Step Solution
- Step 1: Write the proportion equation
135,513.76 : 187,040.10 = 90,193.68 : x - Step 2: Convert to fraction form
135,513.76/187,040.10 = 90,193.68/x - Step 3: Cross multiply
135,513.76x = 187,040.10 × 90,193.68 - Step 4: Simplify right side
135,513.76x = 16,869,834,926.57 - Step 5: Solve for x
x = 16,869,834,926.57/135,513.76 - Step 6: Final answer
x = 124,487.99
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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.