Finding the Fourth Proportional to 135,459.23, 186,931.69 and 74,204.93
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Solution
The fourth proportional to 135,459.23, 186,931.69 and 74,204.93 is: 102,401.68
Step by Step Solution
- Step 1: Write the proportion equation
135,459.23 : 186,931.69 = 74,204.93 : x - Step 2: Convert to fraction form
135,459.23/186,931.69 = 74,204.93/x - Step 3: Cross multiply
135,459.23x = 186,931.69 × 74,204.93 - Step 4: Simplify right side
135,459.23x = 13,871,252,971.23 - Step 5: Solve for x
x = 13,871,252,971.23/135,459.23 - Step 6: Final answer
x = 102,401.68
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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.