Finding the Fourth Proportional to 134,723.20, 201,739.20 and 128,502.40
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Solution
The fourth proportional to 134,723.20, 201,739.20 and 128,502.40 is: 192,423.96
Step by Step Solution
- Step 1: Write the proportion equation
134,723.20 : 201,739.20 = 128,502.40 : x - Step 2: Convert to fraction form
134,723.20/201,739.20 = 128,502.40/x - Step 3: Cross multiply
134,723.20x = 201,739.20 × 128,502.40 - Step 4: Simplify right side
134,723.20x = 25,923,971,374.08 - Step 5: Solve for x
x = 25,923,971,374.08/134,723.20 - Step 6: Final answer
x = 192,423.96
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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.