Finding the Fourth Proportional to 121,875,287.76, 168,190,991.64 and 66,871,129.68
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Solution
The fourth proportional to 121,875,287.76, 168,190,991.64 and 66,871,129.68 is: 92,283,856.88
Step by Step Solution
- Step 1: Write the proportion equation
121,875,287.76 : 168,190,991.64 = 66,871,129.68 : x - Step 2: Convert to fraction form
121,875,287.76/168,190,991.64 = 66,871,129.68/x - Step 3: Cross multiply
121,875,287.76x = 168,190,991.64 × 66,871,129.68 - Step 4: Simplify right side
121,875,287.76x = 11,247,121,612,966,234 - Step 5: Solve for x
x = 11,247,121,612,966,234/121,875,287.76 - Step 6: Final answer
x = 92,283,856.88
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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.