Finding the Fourth Proportional to 171,199.92, 236,319.36 and 128,881.20
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Solution
The fourth proportional to 171,199.92, 236,319.36 and 128,881.20 is: 177,903.84
Step by Step Solution
- Step 1: Write the proportion equation
171,199.92 : 236,319.36 = 128,881.20 : x - Step 2: Convert to fraction form
171,199.92/236,319.36 = 128,881.20/x - Step 3: Cross multiply
171,199.92x = 236,319.36 × 128,881.20 - Step 4: Simplify right side
171,199.92x = 30,457,122,700.03 - Step 5: Solve for x
x = 30,457,122,700.03/171,199.92 - Step 6: Final answer
x = 177,903.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.