Finding the Fourth Proportional to 181,331,990.20, 271,997,985.30 and 130,691,567.80
Calculator
Solution
The fourth proportional to 181,331,990.20, 271,997,985.30 and 130,691,567.80 is: 196,037,351.70
Step by Step Solution
- Step 1: Write the proportion equation
181,331,990.20 : 271,997,985.30 = 130,691,567.80 : x - Step 2: Convert to fraction form
181,331,990.20/271,997,985.30 = 130,691,567.80/x - Step 3: Cross multiply
181,331,990.20x = 271,997,985.30 × 130,691,567.80 - Step 4: Simplify right side
181,331,990.20x = 35,547,843,137,298,356 - Step 5: Solve for x
x = 35,547,843,137,298,356/181,331,990.20 - Step 6: Final answer
x = 196,037,351.70
Related Problems
Find fourth proportional to 90,665,995.10, 135,998,992.65 and 65,345,783.90
Half scale
Find fourth proportional to 362,663,980.40, 543,995,970.60 and 261,383,135.60
Double scale
Find fourth proportional to 181,331,991.20, 271,997,986.80 and 130,691,568.80
Similar ratio
Find fourth proportional to 271,997,985.30, 407,996,977.95 and 196,037,351.70
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.