Finding the Fourth Proportional to 128,117.20, 191,884.20 and 125,201.20
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Solution
The fourth proportional to 128,117.20, 191,884.20 and 125,201.20 is: 187,516.84
Step by Step Solution
- Step 1: Write the proportion equation
128,117.20 : 191,884.20 = 125,201.20 : x - Step 2: Convert to fraction form
128,117.20/191,884.20 = 125,201.20/x - Step 3: Cross multiply
128,117.20x = 191,884.20 × 125,201.20 - Step 4: Simplify right side
128,117.20x = 24,024,132,101.04 - Step 5: Solve for x
x = 24,024,132,101.04/128,117.20 - Step 6: Final answer
x = 187,516.84
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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.