Finding the Fourth Proportional to 135,743.53, 202,513.08 and 128,395.21
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Solution
The fourth proportional to 135,743.53, 202,513.08 and 128,395.21 is: 191,550.26
Step by Step Solution
- Step 1: Write the proportion equation
135,743.53 : 202,513.08 = 128,395.21 : x - Step 2: Convert to fraction form
135,743.53/202,513.08 = 128,395.21/x - Step 3: Cross multiply
135,743.53x = 202,513.08 × 128,395.21 - Step 4: Simplify right side
135,743.53x = 26,001,708,792.37 - Step 5: Solve for x
x = 26,001,708,792.37/135,743.53 - Step 6: Final answer
x = 191,550.26
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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.