Finding the Fourth Proportional to 135,998.27, 202,630.52 and 128,358.66
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Solution
The fourth proportional to 135,998.27, 202,630.52 and 128,358.66 is: 191,247.88
Step by Step Solution
- Step 1: Write the proportion equation
135,998.27 : 202,630.52 = 128,358.66 : x - Step 2: Convert to fraction form
135,998.27/202,630.52 = 128,358.66/x - Step 3: Cross multiply
135,998.27x = 202,630.52 × 128,358.66 - Step 4: Simplify right side
135,998.27x = 26,009,381,380.51 - Step 5: Solve for x
x = 26,009,381,380.51/135,998.27 - Step 6: Final answer
x = 191,247.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.