Finding the Fourth Proportional to 135,666.68, 187,229.64 and 75,243.12
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Solution
The fourth proportional to 135,666.68, 187,229.64 and 75,243.12 is: 103,840.84
Step by Step Solution
- Step 1: Write the proportion equation
135,666.68 : 187,229.64 = 75,243.12 : x - Step 2: Convert to fraction form
135,666.68/187,229.64 = 75,243.12/x - Step 3: Cross multiply
135,666.68x = 187,229.64 × 75,243.12 - Step 4: Simplify right side
135,666.68x = 14,087,742,270.08 - Step 5: Solve for x
x = 14,087,742,270.08/135,666.68 - Step 6: Final answer
x = 103,840.84
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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.