Finding the Fourth Proportional to 268,123,132.79, 402,185,983.67 and 81,378,698.00
Calculator
Solution
The fourth proportional to 268,123,132.79, 402,185,983.67 and 81,378,698.00 is: 122,068,436.86
Step by Step Solution
- Step 1: Write the proportion equation
268,123,132.79 : 402,185,983.67 = 81,378,698.00 : x - Step 2: Convert to fraction form
268,123,132.79/402,185,983.67 = 81,378,698.00/x - Step 3: Cross multiply
268,123,132.79x = 402,185,983.67 × 81,378,698.00 - Step 4: Simplify right side
268,123,132.79x = 32,729,371,706,122,772 - Step 5: Solve for x
x = 32,729,371,706,122,772/268,123,132.79 - Step 6: Final answer
x = 122,068,436.86
Related Problems
Find fourth proportional to 134,061,566.40, 201,092,991.84 and 40,689,349.00
Half scale
Find fourth proportional to 536,246,265.58, 804,371,967.35 and 162,757,396.01
Double scale
Find fourth proportional to 268,123,133.79, 402,185,985.17 and 81,378,699
Similar ratio
Find fourth proportional to 402,184,699.19, 603,278,975.51 and 122,068,047.00
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.