Finding the Fourth Proportional to 187,688.68, 281,507.10 and 47,438.80
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Solution
The fourth proportional to 187,688.68, 281,507.10 and 47,438.80 is: 71,151.65
Step by Step Solution
- Step 1: Write the proportion equation
187,688.68 : 281,507.10 = 47,438.80 : x - Step 2: Convert to fraction form
187,688.68/281,507.10 = 47,438.80/x - Step 3: Cross multiply
187,688.68x = 281,507.10 × 47,438.80 - Step 4: Simplify right side
187,688.68x = 13,354,359,015.48 - Step 5: Solve for x
x = 13,354,359,015.48/187,688.68 - Step 6: Final answer
x = 71,151.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.