Finding the Fourth Proportional to 135,739.27, 202,506.74 and 128,390.95
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Solution
The fourth proportional to 135,739.27, 202,506.74 and 128,390.95 is: 191,543.92
Step by Step Solution
- Step 1: Write the proportion equation
135,739.27 : 202,506.74 = 128,390.95 : x - Step 2: Convert to fraction form
135,739.27/202,506.74 = 128,390.95/x - Step 3: Cross multiply
135,739.27x = 202,506.74 × 128,390.95 - Step 4: Simplify right side
135,739.27x = 26,000,031,581.78 - Step 5: Solve for x
x = 26,000,031,581.78/135,739.27 - Step 6: Final answer
x = 191,543.92
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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.